-21+4x=-2x+15

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Solution for -21+4x=-2x+15 equation:


Simplifying
-21 + 4x = -2x + 15

Reorder the terms:
-21 + 4x = 15 + -2x

Solving
-21 + 4x = 15 + -2x

Solving for variable 'x'.

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

Add '2x' to each side of the equation.
-21 + 4x + 2x = 15 + -2x + 2x

Combine like terms: 4x + 2x = 6x
-21 + 6x = 15 + -2x + 2x

Combine like terms: -2x + 2x = 0
-21 + 6x = 15 + 0
-21 + 6x = 15

Add '21' to each side of the equation.
-21 + 21 + 6x = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 6x = 15 + 21
6x = 15 + 21

Combine like terms: 15 + 21 = 36
6x = 36

Divide each side by '6'.
x = 6

Simplifying
x = 6

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