-78-x-6x=20

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Solution for -78-x-6x=20 equation:


Simplifying
-78 + -1x + -6x = 20

Combine like terms: -1x + -6x = -7x
-78 + -7x = 20

Solving
-78 + -7x = 20

Solving for variable 'x'.

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

Add '78' to each side of the equation.
-78 + 78 + -7x = 20 + 78

Combine like terms: -78 + 78 = 0
0 + -7x = 20 + 78
-7x = 20 + 78

Combine like terms: 20 + 78 = 98
-7x = 98

Divide each side by '-7'.
x = -14

Simplifying
x = -14

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