84=4x-7(-3x+13)

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Solution for 84=4x-7(-3x+13) equation:


Simplifying
84 = 4x + -7(-3x + 13)

Reorder the terms:
84 = 4x + -7(13 + -3x)
84 = 4x + (13 * -7 + -3x * -7)
84 = 4x + (-91 + 21x)

Reorder the terms:
84 = -91 + 4x + 21x

Combine like terms: 4x + 21x = 25x
84 = -91 + 25x

Solving
84 = -91 + 25x

Solving for variable 'x'.

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

Add '-25x' to each side of the equation.
84 + -25x = -91 + 25x + -25x

Combine like terms: 25x + -25x = 0
84 + -25x = -91 + 0
84 + -25x = -91

Add '-84' to each side of the equation.
84 + -84 + -25x = -91 + -84

Combine like terms: 84 + -84 = 0
0 + -25x = -91 + -84
-25x = -91 + -84

Combine like terms: -91 + -84 = -175
-25x = -175

Divide each side by '-25'.
x = 7

Simplifying
x = 7

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