x - (8 - 3x + 10) = 10
x - (18 - 3x) = 10
x - 18 + 3x = 10
4x - 18 = 10
4x = 10 + 18
4x = 28
x = 28/4
x = 7
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x - (8 - 3x + 10) = 10
x - (18 - 3x) = 10
x - 18 + 3x = 10
4x - 18 = 10
4x = 10 + 18
4x = 28
x = 28/4
x = 7
x-(8-3x+10)=10
x-8+3x-10=10
4x=28
x=7
-Espero que te ayude.