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telo118 [61]
3 years ago
8

Solve. 7x+2y=2, x-2y=14

Mathematics
2 answers:
balu736 [363]3 years ago
8 0
Isolate the X in the second equation

x=2y+14

Substitute that in for the x in the fist equation

7(2y+14) + 2y = 2

Distribute the 7

14y+14+2y=2

Combine like terms

16y+14=2

Isolate the 16y

16y=-12

Isolate y by dividing the whole equation by 16

y=-12/16

Simplify

y=-3/4

That is your y. To find x, plug y into one of the equations. I'm plugging it into the version of the second equation after we isolated x.

x=2(-3/4)+14

Distribute the 2

x=(-1.5)+14

Simplify

x=12.5

nikitadnepr [17]3 years ago
6 0
I have the answer and process on the attachment. 

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