3x+7=-123-10x

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Solution for 3x+7=-123-10x equation:


Simplifying
3x + 7 = -123 + -10x

Reorder the terms:
7 + 3x = -123 + -10x

Solving
7 + 3x = -123 + -10x

Solving for variable 'x'.

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

Add '10x' to each side of the equation.
7 + 3x + 10x = -123 + -10x + 10x

Combine like terms: 3x + 10x = 13x
7 + 13x = -123 + -10x + 10x

Combine like terms: -10x + 10x = 0
7 + 13x = -123 + 0
7 + 13x = -123

Add '-7' to each side of the equation.
7 + -7 + 13x = -123 + -7

Combine like terms: 7 + -7 = 0
0 + 13x = -123 + -7
13x = -123 + -7

Combine like terms: -123 + -7 = -130
13x = -130

Divide each side by '13'.
x = -10

Simplifying
x = -10

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