3 years ago

Solving system by elimination 7x+2y=24 8x+2y=30

2 answers:

8 0

7x+2y=24
<span>-8x-2y=-30 (multiplied each side by -1)
-x = -6
x = 6

</span>7x+2y=24
7(6)+2y=24
42+2y=24
2y = -18
y = -9

6 0

7x+2y=24
-8x-2y=-30
-x=-6
x=6
7(6)+2y=24
42+2y=24
2y=-18
y=-9

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