7=3(x-7)-7x

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Solution for 7=3(x-7)-7x equation:


Simplifying
7 = 3(x + -7) + -7x

Reorder the terms:
7 = 3(-7 + x) + -7x
7 = (-7 * 3 + x * 3) + -7x
7 = (-21 + 3x) + -7x

Combine like terms: 3x + -7x = -4x
7 = -21 + -4x

Solving
7 = -21 + -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.
7 + 4x = -21 + -4x + 4x

Combine like terms: -4x + 4x = 0
7 + 4x = -21 + 0
7 + 4x = -21

Add '-7' to each side of the equation.
7 + -7 + 4x = -21 + -7

Combine like terms: 7 + -7 = 0
0 + 4x = -21 + -7
4x = -21 + -7

Combine like terms: -21 + -7 = -28
4x = -28

Divide each side by '4'.
x = -7

Simplifying
x = -7

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