84=7(x+8)-3x

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Solution for 84=7(x+8)-3x equation:


Simplifying
84 = 7(x + 8) + -3x

Reorder the terms:
84 = 7(8 + x) + -3x
84 = (8 * 7 + x * 7) + -3x
84 = (56 + 7x) + -3x

Combine like terms: 7x + -3x = 4x
84 = 56 + 4x

Solving
84 = 56 + 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.
84 + -4x = 56 + 4x + -4x

Combine like terms: 4x + -4x = 0
84 + -4x = 56 + 0
84 + -4x = 56

Add '-84' to each side of the equation.
84 + -84 + -4x = 56 + -84

Combine like terms: 84 + -84 = 0
0 + -4x = 56 + -84
-4x = 56 + -84

Combine like terms: 56 + -84 = -28
-4x = -28

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

Simplifying
x = 7

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