-30-x=10-3x

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Solution for -30-x=10-3x equation:


Simplifying
-30 + -1x = 10 + -3x

Solving
-30 + -1x = 10 + -3x

Solving for variable 'x'.

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

Add '3x' to each side of the equation.
-30 + -1x + 3x = 10 + -3x + 3x

Combine like terms: -1x + 3x = 2x
-30 + 2x = 10 + -3x + 3x

Combine like terms: -3x + 3x = 0
-30 + 2x = 10 + 0
-30 + 2x = 10

Add '30' to each side of the equation.
-30 + 30 + 2x = 10 + 30

Combine like terms: -30 + 30 = 0
0 + 2x = 10 + 30
2x = 10 + 30

Combine like terms: 10 + 30 = 40
2x = 40

Divide each side by '2'.
x = 20

Simplifying
x = 20

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