-3x-20=4x+9

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Solution for -3x-20=4x+9 equation:


Simplifying
-3x + -20 = 4x + 9

Reorder the terms:
-20 + -3x = 4x + 9

Reorder the terms:
-20 + -3x = 9 + 4x

Solving
-20 + -3x = 9 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
-20 + -3x + -4x = 9 + 4x + -4x

Combine like terms: -3x + -4x = -7x
-20 + -7x = 9 + 4x + -4x

Combine like terms: 4x + -4x = 0
-20 + -7x = 9 + 0
-20 + -7x = 9

Add '20' to each side of the equation.
-20 + 20 + -7x = 9 + 20

Combine like terms: -20 + 20 = 0
0 + -7x = 9 + 20
-7x = 9 + 20

Combine like terms: 9 + 20 = 29
-7x = 29

Divide each side by '-7'.
x = -4.142857143

Simplifying
x = -4.142857143

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