-21x+15=-5x+7

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Solution for -21x+15=-5x+7 equation:


Simplifying
-21x + 15 = -5x + 7

Reorder the terms:
15 + -21x = -5x + 7

Reorder the terms:
15 + -21x = 7 + -5x

Solving
15 + -21x = 7 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
15 + -21x + 5x = 7 + -5x + 5x

Combine like terms: -21x + 5x = -16x
15 + -16x = 7 + -5x + 5x

Combine like terms: -5x + 5x = 0
15 + -16x = 7 + 0
15 + -16x = 7

Add '-15' to each side of the equation.
15 + -15 + -16x = 7 + -15

Combine like terms: 15 + -15 = 0
0 + -16x = 7 + -15
-16x = 7 + -15

Combine like terms: 7 + -15 = -8
-16x = -8

Divide each side by '-16'.
x = 0.5

Simplifying
x = 0.5

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