2x-5x-15=21x-3

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Solution for 2x-5x-15=21x-3 equation:


Simplifying
2x + -5x + -15 = 21x + -3

Reorder the terms:
-15 + 2x + -5x = 21x + -3

Combine like terms: 2x + -5x = -3x
-15 + -3x = 21x + -3

Reorder the terms:
-15 + -3x = -3 + 21x

Solving
-15 + -3x = -3 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
-15 + -3x + -21x = -3 + 21x + -21x

Combine like terms: -3x + -21x = -24x
-15 + -24x = -3 + 21x + -21x

Combine like terms: 21x + -21x = 0
-15 + -24x = -3 + 0
-15 + -24x = -3

Add '15' to each side of the equation.
-15 + 15 + -24x = -3 + 15

Combine like terms: -15 + 15 = 0
0 + -24x = -3 + 15
-24x = -3 + 15

Combine like terms: -3 + 15 = 12
-24x = 12

Divide each side by '-24'.
x = -0.5

Simplifying
x = -0.5

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