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-7x + 4y = -6 2x - 5y= 21​
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-7x + 4y = -6
2x - 5y= 21​

User Chris Boesing
by
7.5k points

1 Answer

4 votes

-7x + 4y = -6

2x - 5y= 21​

Make it so x's are equal

-14x + 8y = -12

-14x - 40y = 147

Subtract

-32y = -169

Divide

y = 5.28125

Plug in the y value

2x - 5(5.28125) = 21

Simplify

2x -26.40625 = 21

Add

2x = 47.40625

Divide

x = 23.703125

Hope this helps! ;)

User Tom Bowers
by
8.0k points
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