21x+30=-9x

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Solution for 21x+30=-9x equation:


Simplifying
21x + 30 = -9x

Reorder the terms:
30 + 21x = -9x

Solving
30 + 21x = -9x

Solving for variable 'x'.

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

Add '9x' to each side of the equation.
30 + 21x + 9x = -9x + 9x

Combine like terms: 21x + 9x = 30x
30 + 30x = -9x + 9x

Combine like terms: -9x + 9x = 0
30 + 30x = 0

Add '-30' to each side of the equation.
30 + -30 + 30x = 0 + -30

Combine like terms: 30 + -30 = 0
0 + 30x = 0 + -30
30x = 0 + -30

Combine like terms: 0 + -30 = -30
30x = -30

Divide each side by '30'.
x = -1

Simplifying
x = -1

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