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anonymous
 5 years ago
solve by substitution method
0.1x+0.9y=4.1
0.6x0.7y=5.9
anonymous
 5 years ago
solve by substitution method 0.1x+0.9y=4.1 0.6x0.7y=5.9

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0this time is your turn. Try to find the answer by yourself. The first thing to to here is to convert 0.1, 0.9, 4.1, 0.6, 0.7 and 5.9 into a fraction. 0.1 = 1/10 0.9=9/10 4.1=41/10 0.6=6/10 0.7=7/10 5.9=59/10 You have to follow the procedure Mathmind gave you before. If you have any question, ask :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0im stuck on this one with the decimals. I tried the formula but something is not adding up right.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0the equation after the conversion is: (1/10)x+(9/10)y=41/10 > equation1 (6/10)x(7/10)y=59/10 > equation2 now choose one equation (either 1 or 2) and isolate one variable (4 example x). Try to isolate x from equation 1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Because both equation 1 and 2 have the same denominator, you can simplify it. The equation system will look like this: x+9y=41 > equation1 6x7y=59 > equation2 Now isolating x from equation one, we get: x=419y What is the next step to take?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I need your feedback man :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Exactly! If we isolated x from equation 1, we have to replace this x (419y) into equation 2. This is like a rule. For example, if you isolate x from equation 2, then you have to replace this x into equation 1. Now find the value for y

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.024645y7y=59 24652y=59 52y=305

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oops math error i multiplied wrong

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0ok redo it and show me the correct answer.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0exactly you got it. Now you have to replace this value (y=5) into either eq1 or 2 and you will find the x value. That is all you have to do my friend. Well done :) Sorry for my English :( my native language is spanish

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0im inserting the 5 for y but its not adding up right

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0y is not equal to 5, but 5

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0try with this value for y

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Do you understand what substituting means?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0I know you know but Im asking rich if he understands the concept of substituting.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Well from the question you know that you are trying to solve for x and y but both of them have x and y in it which can be completely different so you want to essentially get a single variable x or y it doesnt matter in one equation and you solve for that one.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that is exactly what we have been doing :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0How can he understand what you are doing when he doesn't understand the concept. If you don't understand something and you work it out and find the answer it does no help since he is just memorizing it.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Yeah you are right romero. We had a discution about that before :). Rich you finally did it. If you replace x and y into the one of the original equation you have both sides are equal. Well done dude

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0That is the procedure you have to follow
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