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1+\left(x+1\right)\times 2=7
Variable x cannot be equal to -1 since division by zero is not defined. Multiply both sides of the equation by x+1.
1+2x+2=7
Use the distributive property to multiply x+1 by 2.
3+2x=7
Add 1 and 2 to get 3.
2x=7-3
Subtract 3 from both sides.
2x=4
Subtract 3 from 7 to get 4.
x=\frac{4}{2}
Divide both sides by 2.
x=2
Divide 4 by 2 to get 2.