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anonymous
 5 years ago
Literal Equation: Help solve
3x4y = 26
x  8y = 22
anonymous
 5 years ago
Literal Equation: Help solve 3x4y = 26 x  8y = 22

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.03x4y = 26 (2) x  8y = 22 6x+8y = 52 x  8y = 22  5x = 30 x = 6

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Why do you only subtract 2?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0he is multiplying the whole equation with 2

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0you mulltiply the whole thing by (2) in order to get an equation that can eliminate a variable

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0And you are elimination the Y?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0yes; with the y gone, we can easily solve for x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What about substitution?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0for example: 3x = 12; x=4 what happens if we multiply the whole thing by 5, does the x value change? 3x = 12 (5) 15x = 60 ; x = 4

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0substitution is just solving for one variable in the terms of the other ... its more labor intensive

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0subbing, elimiation, matrix .... all get the same answer so you eventually just go with whats best for you :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Except rumor has it that this problem will be on a test with subbing instead!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0How do you get to kentucky? lol

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0then solve for one variable in terms of the other; use that 'value' in the other eqaution to get a solid value for the 'other' variable; and use the solid value to determine the value of the unknowned

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0What if i took 3x  4y = 26 x  8y = 22 and i did this x = 22 + 8y would that work?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0that would work out great :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0since x=x=x=x=x... use that 'value' for x in the top and solve it all for y

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Are you saying 3(22 + 8y)  4y = 26 66 + 24y  4y = 26

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Why do I flip it the 2nd equation though?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0becasue you cant really determine the value of y from the first equation; you need another 'form' to use it in to calibrate the value

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0umm.... what do you mean by flip it?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Changing it from x  8y = 22 to x = 22 + 8y

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0think of subbing as 'looking at it from another direction'...

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0x + y = 6 can have any values; and you cant determine x or y to be one point ..... so look at it thru a different equation right?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So in the x  y = 4 4y  x = 14 could I change the x  y = 4 to x = 4 + y?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0yes..... then we use that 'value' in the other equation to see it from a different perspective and can solve for y in it

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0or in the equation x + y = 10 6x  7y = 34 I can change the x + y = 10 to x = 10  y?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I think I get it. If I don't I'll just ask you again :D
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