78=x-5x

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Solution for 78=x-5x equation:


Simplifying
78 = x + -5x

Combine like terms: x + -5x = -4x
78 = -4x

Solving
78 = -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.
78 + 4x = -4x + 4x

Combine like terms: -4x + 4x = 0
78 + 4x = 0

Add '-78' to each side of the equation.
78 + -78 + 4x = 0 + -78

Combine like terms: 78 + -78 = 0
0 + 4x = 0 + -78
4x = 0 + -78

Combine like terms: 0 + -78 = -78
4x = -78

Divide each side by '4'.
x = -19.5

Simplifying
x = -19.5

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