21-4x=15+2x

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


Simplifying
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 = -6
-6x = -6

Divide each side by '-6'.
x = 1

Simplifying
x = 1

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