3x-30=x+70

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Solution for 3x-30=x+70 equation:


Simplifying
3x + -30 = x + 70

Reorder the terms:
-30 + 3x = x + 70

Reorder the terms:
-30 + 3x = 70 + x

Solving
-30 + 3x = 70 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
-30 + 3x + -1x = 70 + x + -1x

Combine like terms: 3x + -1x = 2x
-30 + 2x = 70 + x + -1x

Combine like terms: x + -1x = 0
-30 + 2x = 70 + 0
-30 + 2x = 70

Add '30' to each side of the equation.
-30 + 30 + 2x = 70 + 30

Combine like terms: -30 + 30 = 0
0 + 2x = 70 + 30
2x = 70 + 30

Combine like terms: 70 + 30 = 100
2x = 100

Divide each side by '2'.
x = 50

Simplifying
x = 50

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