How do you solve 7x+2y=2, x-2y=14

Question

Garrett Pace

Mathematics

2 April, 07:10

How do you solve 7x+2y=2, x-2y=14

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Parker · Answer 1

First you isolate x in the equation x-2y=14 and substitute. So the equation should be x = 2y+14. You plug this equation into the x of 7x on the other problem and solve. Your final equation should now be 7 (2y+14) + 2y=2. Now distribute the 7 into (2y+14) to get 14y+98 + 2y=2. Next, just add up the variables and solve to get 16y=-96. Divide - 96 by 16 to get your final answer of y=-6.