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-x - 7y = 18 4x + 7y = -30 How can you order a ladder?
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3 votes
-x - 7y = 18
4x + 7y = -30
How can you order a ladder?

User Feodoran
by
8.1k points

1 Answer

4 votes
I can solve
add them equations

-x-7y=18
4x+7y=-30 +
3x+0y=-12

3x=-12
divide 3
x=-4
sub
-x-7y=18
-(-4)-7y=18
4-7y=18
minus 4
-7y=14
dividd e-7
y=-2

x=-4
y=-2
(-4,-2)
User Csongor Kiss
by
7.5k points
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