10x+21=15-2x

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Solution for 10x+21=15-2x equation:


Simplifying
10x + 21 = 15 + -2x

Reorder the terms:
21 + 10x = 15 + -2x

Solving
21 + 10x = 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 + 10x + 2x = 15 + -2x + 2x

Combine like terms: 10x + 2x = 12x
21 + 12x = 15 + -2x + 2x

Combine like terms: -2x + 2x = 0
21 + 12x = 15 + 0
21 + 12x = 15

Add '-21' to each side of the equation.
21 + -21 + 12x = 15 + -21

Combine like terms: 21 + -21 = 0
0 + 12x = 15 + -21
12x = 15 + -21

Combine like terms: 15 + -21 = -6
12x = -6

Divide each side by '12'.
x = -0.5

Simplifying
x = -0.5

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