-278=5x-7(2-4x)

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Solution for -278=5x-7(2-4x) equation:


Simplifying
-278 = 5x + -7(2 + -4x)
-278 = 5x + (2 * -7 + -4x * -7)
-278 = 5x + (-14 + 28x)

Reorder the terms:
-278 = -14 + 5x + 28x

Combine like terms: 5x + 28x = 33x
-278 = -14 + 33x

Solving
-278 = -14 + 33x

Solving for variable 'x'.

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

Add '-33x' to each side of the equation.
-278 + -33x = -14 + 33x + -33x

Combine like terms: 33x + -33x = 0
-278 + -33x = -14 + 0
-278 + -33x = -14

Add '278' to each side of the equation.
-278 + 278 + -33x = -14 + 278

Combine like terms: -278 + 278 = 0
0 + -33x = -14 + 278
-33x = -14 + 278

Combine like terms: -14 + 278 = 264
-33x = 264

Divide each side by '-33'.
x = -8

Simplifying
x = -8

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