4x-30=x-15

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Solution for 4x-30=x-15 equation:


Simplifying
4x + -30 = x + -15

Reorder the terms:
-30 + 4x = x + -15

Reorder the terms:
-30 + 4x = -15 + x

Solving
-30 + 4x = -15 + 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 + 4x + -1x = -15 + x + -1x

Combine like terms: 4x + -1x = 3x
-30 + 3x = -15 + x + -1x

Combine like terms: x + -1x = 0
-30 + 3x = -15 + 0
-30 + 3x = -15

Add '30' to each side of the equation.
-30 + 30 + 3x = -15 + 30

Combine like terms: -30 + 30 = 0
0 + 3x = -15 + 30
3x = -15 + 30

Combine like terms: -15 + 30 = 15
3x = 15

Divide each side by '3'.
x = 5

Simplifying
x = 5

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