4(x + 10) - 2(x - 5) = 0
4x + 40 - 2x + 10 = 0
4x - 2x = - 40 - 10
2x = - 50
x = - 50 / 2
x = - 25
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4(x + 10) - 2(x - 5) = 0
4x + 40 - 2x + 10 = 0
4x - 2x = - 40 - 10
2x = - 50
x = - 50 / 2
x = - 25