Question

x + (x + 17) – (5 – 2x)= 2x – (x – 30)

Answer 1

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$x + (x + 17) – (5 – 2x)= 2x – (x – 30) \\ \\ 2x+17-\left(5-2x\right)=2x-\left(x-30\right) \\ \\ 2x+17-5-\left(-2x\right)=2x-\left(x-30\right) \\ \\ 2x+17-5+2x=2x-\left(x-30\right) \\ \\ 2x+12+2x=2x-\left(x-30\right) \\ \\ 2x+12+2x=2x-\left(x-30\right) \\ \\ 4x+12=x+30 \\ \\ 4x+12-x=30 \\ \\ 3x+12=30 \\ \\ 3x=30-12 \\ \\ 3x=18 \\ \\ x=\frac{18}{3} \\ \\ x = 6$