3x+7=8-(x+5)

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Solution for 3x+7=8-(x+5) equation:


Simplifying
3x + 7 = 8 + -1(x + 5)

Reorder the terms:
7 + 3x = 8 + -1(x + 5)

Reorder the terms:
7 + 3x = 8 + -1(5 + x)
7 + 3x = 8 + (5 * -1 + x * -1)
7 + 3x = 8 + (-5 + -1x)

Combine like terms: 8 + -5 = 3
7 + 3x = 3 + -1x

Solving
7 + 3x = 3 + -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.
7 + 3x + x = 3 + -1x + x

Combine like terms: 3x + x = 4x
7 + 4x = 3 + -1x + x

Combine like terms: -1x + x = 0
7 + 4x = 3 + 0
7 + 4x = 3

Add '-7' to each side of the equation.
7 + -7 + 4x = 3 + -7

Combine like terms: 7 + -7 = 0
0 + 4x = 3 + -7
4x = 3 + -7

Combine like terms: 3 + -7 = -4
4x = -4

Divide each side by '4'.
x = -1

Simplifying
x = -1

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