-3-4x+7x=-30

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Solution for -3-4x+7x=-30 equation: 


Simplifying
-3 + -4x + 7x = -30

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

Solving
-3 + 3x = -30

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 3x = -30 + 3

Combine like terms: -3 + 3 = 0
0 + 3x = -30 + 3
3x = -30 + 3

Combine like terms: -30 + 3 = -27
3x = -27

Divide each side by '3'.
x = -9

Simplifying
x = -9

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