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Solve this system of equations using the addition method?
xy=6
3y=x+22 Solve this system of equations using the addition method?
xy=6
3y=x+22 @Mathematics
 2 years ago
 2 years ago
Solve this system of equations using the addition method? xy=6 3y=x+22 Solve this system of equations using the addition method? xy=6 3y=x+22 @Mathematics
 2 years ago
 2 years ago

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amistre64Best ResponseYou've already chosen the best response.1
3x +3y = 18 3y = x+22  3x = x+4 4x = 4
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
by using the "addition" method ... you add the 2 equations together after you modify one of them by a scalar
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
a scalar just means some number that you multiply the whole equation by to scale it up or down to something that you can use
 2 years ago

MightySmurfBest ResponseYou've already chosen the best response.0
o so i just substitute it
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
well, substitution will work as well; but this is a new method for you to learn so that you have many ways you can attack a problem to get to a solution
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
this "addition" method is also commonly refered to as "elimination" since the goal is to eliminate one of the variables
 2 years ago

MightySmurfBest ResponseYou've already chosen the best response.0
o ok thank you u make it sound easier to solve
 2 years ago

MightySmurfBest ResponseYou've already chosen the best response.0
so if i were to have 8x+3y=5 and 8x2y=6 i would add the _8x and the 8x to get zero then 32y to get y and 5+6 to get 1 right
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
practice helps :) the steps are pretty much like this: x  y = 6 ; (1) 3y = x + 22 ; (2) given 2 equations lets multiply one of them by a "n"umber to scale it. the easiest one would be the first one to me n(x  y = 6) ; (1) 3y = x + 22 ; (2) nx  ny = 6n ; (1) 3y = x + 22 ; (2) now what does "n" have to be to get rid of the 3y? id say n = 3 will work 3x  3y = 6(3) ; (1) 3y = x + 22 ; (2) 3x +3y = 18 ; (1) 3y = x + 22 ; (2) now we can add the equations together: 3x +3y = 18 ; (1) 3y = x + 22 ; (2)  3x = x + 4 ; (3) and solve the new equation (3) for the remaining variable
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
if they give you: 8x+3y =5 8x2y = 6 then yes the x parts are already set up for elimintion, just add the 2 equations together
 2 years ago

MightySmurfBest ResponseYou've already chosen the best response.0
ok thank u sooo much i would give u thousands of medals if i could
 2 years ago

amistre64Best ResponseYou've already chosen the best response.1
youre welcome, and good luck ;)
 2 years ago
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