3x-7x=-20

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Solution for 3x-7x=-20 equation: 


Simplifying
3x + -7x = -20

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

Solving
-4x = -20

Solving for variable 'x'.

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

Divide each side by '-4'.
x = 5

Simplifying
x = 5

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