SOLUTION: 2x+4y=24 -15x+10y=-20 x=? y=?
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Question 141230
:
2x+4y=24
-15x+10y=-20
x=? y=?
Answer by
checkley77(12844)
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2x+4y=24 multiply this equation by -2.5 & add.
-15x+10y=-20
-5x-10y=-60
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-20x=-80
x=-80/-20
x=4 answer.
2*4+4y=24
8+4y=24
4y=24-8
4y=16
y=16/4
y=4 answer.
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