Posted by sabrina on Thursday, December 13, 2012 at 7:02pm.
x + 10 = 5 x - 20
30 = 4 x
x = 15/2
x+3+7=5(x-4)
10+x=5x + -20
10=4x + -20
30=4x
x=7.5
x+3+7=5(x-4)
x + 10 = 5x - 20
10 + 20 = 5x - x
30 = 4x
30/4 = x
7.5 = x
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