We need to solve the equation $7(x+1) = 9 - (2x-1)$ for $x$.

AlgebraLinear EquationsEquation SolvingVariable Isolation
2025/6/25

1. Problem Description

We need to solve the equation 7(x+1)=9(2x1)7(x+1) = 9 - (2x-1) for xx.

2. Solution Steps

First, we distribute the 77 on the left side and the negative sign on the right side of the equation:
7(x+1)=7x+77(x+1) = 7x + 7
9(2x1)=92x+1=102x9 - (2x - 1) = 9 - 2x + 1 = 10 - 2x
So the equation becomes:
7x+7=102x7x + 7 = 10 - 2x
Next, we add 2x2x to both sides of the equation:
7x+2x+7=102x+2x7x + 2x + 7 = 10 - 2x + 2x
9x+7=109x + 7 = 10
Then, we subtract 77 from both sides of the equation:
9x+77=1079x + 7 - 7 = 10 - 7
9x=39x = 3
Finally, we divide both sides of the equation by 99:
9x9=39\frac{9x}{9} = \frac{3}{9}
x=13x = \frac{1}{3}

3. Final Answer

x=13x = \frac{1}{3}

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