7x+2(x-10)=61-(x+1)

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Solution for 7x+2(x-10)=61-(x+1) equation:


Simplifying
7x + 2(x + -10) = 61 + -1(x + 1)

Reorder the terms:
7x + 2(-10 + x) = 61 + -1(x + 1)
7x + (-10 * 2 + x * 2) = 61 + -1(x + 1)
7x + (-20 + 2x) = 61 + -1(x + 1)

Reorder the terms:
-20 + 7x + 2x = 61 + -1(x + 1)

Combine like terms: 7x + 2x = 9x
-20 + 9x = 61 + -1(x + 1)

Reorder the terms:
-20 + 9x = 61 + -1(1 + x)
-20 + 9x = 61 + (1 * -1 + x * -1)
-20 + 9x = 61 + (-1 + -1x)

Combine like terms: 61 + -1 = 60
-20 + 9x = 60 + -1x

Solving
-20 + 9x = 60 + -1x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add 'x' to each side of the equation.
-20 + 9x + x = 60 + -1x + x

Combine like terms: 9x + x = 10x
-20 + 10x = 60 + -1x + x

Combine like terms: -1x + x = 0
-20 + 10x = 60 + 0
-20 + 10x = 60

Add '20' to each side of the equation.
-20 + 20 + 10x = 60 + 20

Combine like terms: -20 + 20 = 0
0 + 10x = 60 + 20
10x = 60 + 20

Combine like terms: 60 + 20 = 80
10x = 80

Divide each side by '10'.
x = 8

Simplifying
x = 8

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