78=-2x-2(x-19)

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Solution for 78=-2x-2(x-19) equation:


Simplifying
78 = -2x + -2(x + -19)

Reorder the terms:
78 = -2x + -2(-19 + x)
78 = -2x + (-19 * -2 + x * -2)
78 = -2x + (38 + -2x)

Reorder the terms:
78 = 38 + -2x + -2x

Combine like terms: -2x + -2x = -4x
78 = 38 + -4x

Solving
78 = 38 + -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 = 38 + -4x + 4x

Combine like terms: -4x + 4x = 0
78 + 4x = 38 + 0
78 + 4x = 38

Add '-78' to each side of the equation.
78 + -78 + 4x = 38 + -78

Combine like terms: 78 + -78 = 0
0 + 4x = 38 + -78
4x = 38 + -78

Combine like terms: 38 + -78 = -40
4x = -40

Divide each side by '4'.
x = -10

Simplifying
x = -10

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