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How do I solve this by elimination? 4x + 10y = -12 -4X - 7Y = 0

How do I solve this by elimination? 4x + 10y = -12 -4X - 7Y = 0
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How do I solve this by elimination?
4x + 10y = -12
-4X - 7Y = 0

asked
User Ncla
by
6.9k points

1 Answer

4 votes

Answer:


x=7, y=-4

Explanation:


(4x+10y)+(-4x-7y)=-12+0 \implies 3y=-12 \implies y=-4 \\ \\ 4x+10(-4)=-12 \implies x=7 \\ \\ \therefore x=7, y=-4

answered
User Tramov
by
7.9k points
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