4x+9=81+3x

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Solution for 4x+9=81+3x equation:


Simplifying
4x + 9 = 81 + 3x

Reorder the terms:
9 + 4x = 81 + 3x

Solving
9 + 4x = 81 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
9 + 4x + -3x = 81 + 3x + -3x

Combine like terms: 4x + -3x = 1x
9 + 1x = 81 + 3x + -3x

Combine like terms: 3x + -3x = 0
9 + 1x = 81 + 0
9 + 1x = 81

Add '-9' to each side of the equation.
9 + -9 + 1x = 81 + -9

Combine like terms: 9 + -9 = 0
0 + 1x = 81 + -9
1x = 81 + -9

Combine like terms: 81 + -9 = 72
1x = 72

Divide each side by '1'.
x = 72

Simplifying
x = 72

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