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IsTimBest ResponseYou've already chosen the best response.1
Rearrange either the first equation to solve for x, or the 2nd equation to solve for y. Then sub the rearranged equation into the other, unchanged equation.
 one year ago

blurbendyBest ResponseYou've already chosen the best response.1
You know x = 15  y, so we can use that in the first equation. y = 1/2(15  y) + 3 y = 7.5  1/2y +3 y = 10.5  1/2y 1.5y = 10.5 y = 7 Now put y = 7 into the second equation. x = 15  7 x = 8 Put x = 8 and y = 7 into both equations and check your answer.
 one year ago

IsTimBest ResponseYou've already chosen the best response.1
A bit wordy there Blur. Try and let the student do their studying for themselves. They are potentially good enough.
 one year ago
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