5+9x=7(3+12x)

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Solution for 5+9x=7(3+12x) equation:


Simplifying
5 + 9x = 7(3 + 12x)
5 + 9x = (3 * 7 + 12x * 7)
5 + 9x = (21 + 84x)

Solving
5 + 9x = 21 + 84x

Solving for variable 'x'.

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

Add '-84x' to each side of the equation.
5 + 9x + -84x = 21 + 84x + -84x

Combine like terms: 9x + -84x = -75x
5 + -75x = 21 + 84x + -84x

Combine like terms: 84x + -84x = 0
5 + -75x = 21 + 0
5 + -75x = 21

Add '-5' to each side of the equation.
5 + -5 + -75x = 21 + -5

Combine like terms: 5 + -5 = 0
0 + -75x = 21 + -5
-75x = 21 + -5

Combine like terms: 21 + -5 = 16
-75x = 16

Divide each side by '-75'.
x = -0.2133333333

Simplifying
x = -0.2133333333

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