78=5x-2(5x-9)

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Solution for 78=5x-2(5x-9) equation:


Simplifying
78 = 5x + -2(5x + -9)

Reorder the terms:
78 = 5x + -2(-9 + 5x)
78 = 5x + (-9 * -2 + 5x * -2)
78 = 5x + (18 + -10x)

Reorder the terms:
78 = 18 + 5x + -10x

Combine like terms: 5x + -10x = -5x
78 = 18 + -5x

Solving
78 = 18 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
78 + 5x = 18 + -5x + 5x

Combine like terms: -5x + 5x = 0
78 + 5x = 18 + 0
78 + 5x = 18

Add '-78' to each side of the equation.
78 + -78 + 5x = 18 + -78

Combine like terms: 78 + -78 = 0
0 + 5x = 18 + -78
5x = 18 + -78

Combine like terms: 18 + -78 = -60
5x = -60

Divide each side by '5'.
x = -12

Simplifying
x = -12

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