3x+4x-9=-30

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Solution for 3x+4x-9=-30 equation:


Simplifying
3x + 4x + -9 = -30

Reorder the terms:
-9 + 3x + 4x = -30

Combine like terms: 3x + 4x = 7x
-9 + 7x = -30

Solving
-9 + 7x = -30

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 7x = -30 + 9

Combine like terms: -9 + 9 = 0
0 + 7x = -30 + 9
7x = -30 + 9

Combine like terms: -30 + 9 = -21
7x = -21

Divide each side by '7'.
x = -3

Simplifying
x = -3

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