if (2x+1)+(2x+3)=56 find 'x'
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(2x + 1) + (2x + 3) = 56
2x + 1 + 2x + 3 = 56
4x + 4 = 56
4x = 56 - 4
4x = 52
x = 52/4
x = 13
Espero ter ajudado!