81=4(x+8)+3x

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Solution for 81=4(x+8)+3x equation:


Simplifying
81 = 4(x + 8) + 3x

Reorder the terms:
81 = 4(8 + x) + 3x
81 = (8 * 4 + x * 4) + 3x
81 = (32 + 4x) + 3x

Combine like terms: 4x + 3x = 7x
81 = 32 + 7x

Solving
81 = 32 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
81 + -7x = 32 + 7x + -7x

Combine like terms: 7x + -7x = 0
81 + -7x = 32 + 0
81 + -7x = 32

Add '-81' to each side of the equation.
81 + -81 + -7x = 32 + -81

Combine like terms: 81 + -81 = 0
0 + -7x = 32 + -81
-7x = 32 + -81

Combine like terms: 32 + -81 = -49
-7x = -49

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

Simplifying
x = 7

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