70-x=20+3x

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Solution for 70-x=20+3x equation:


Simplifying
70 + -1x = 20 + 3x

Solving
70 + -1x = 20 + 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.
70 + -1x + -3x = 20 + 3x + -3x

Combine like terms: -1x + -3x = -4x
70 + -4x = 20 + 3x + -3x

Combine like terms: 3x + -3x = 0
70 + -4x = 20 + 0
70 + -4x = 20

Add '-70' to each side of the equation.
70 + -70 + -4x = 20 + -70

Combine like terms: 70 + -70 = 0
0 + -4x = 20 + -70
-4x = 20 + -70

Combine like terms: 20 + -70 = -50
-4x = -50

Divide each side by '-4'.
x = 12.5

Simplifying
x = 12.5

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