3x+15x=7x-21x

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Solution for 3x+15x=7x-21x equation:


Simplifying
3x + 15x = 7x + -21x

Combine like terms: 3x + 15x = 18x
18x = 7x + -21x

Combine like terms: 7x + -21x = -14x
18x = -14x

Solving
18x = -14x

Solving for variable 'x'.

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

Add '14x' to each side of the equation.
18x + 14x = -14x + 14x

Combine like terms: 18x + 14x = 32x
32x = -14x + 14x

Combine like terms: -14x + 14x = 0
32x = 0

Divide each side by '32'.
x = 0

Simplifying
x = 0

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