378=-9(-5x-7)

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Solution for 378=-9(-5x-7) equation:


Simplifying
378 = -9(-5x + -7)

Reorder the terms:
378 = -9(-7 + -5x)
378 = (-7 * -9 + -5x * -9)
378 = (63 + 45x)

Solving
378 = 63 + 45x

Solving for variable 'x'.

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

Add '-45x' to each side of the equation.
378 + -45x = 63 + 45x + -45x

Combine like terms: 45x + -45x = 0
378 + -45x = 63 + 0
378 + -45x = 63

Add '-378' to each side of the equation.
378 + -378 + -45x = 63 + -378

Combine like terms: 378 + -378 = 0
0 + -45x = 63 + -378
-45x = 63 + -378

Combine like terms: 63 + -378 = -315
-45x = -315

Divide each side by '-45'.
x = 7

Simplifying
x = 7

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