Answer and shown work for 5x + y = 10 -x - y = -2
2 answers:
<span>5x+y = 10
-x-y = -2
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4x = 8
x = 2
</span>---------------------------------------------------------------------------------------------------------
-x-y = -2
-2-y = -2
-y = 0
y = 0
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Check:
5x+y = 10
5(2)+0 = 10
10+0 = 10
10 = 10
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Solution : x=2, y=0
Solve first equation for y:
5x+y=10
y=10-5x. Plug this equation into second equation
-x-(10-5x)=-2
-x-10+5x=-2
4x=8
x=2 (plug x into first equation)
5(2)+y=10
y=0
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