391.50=3x+4(.65x)

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Solution for 391.50=3x+4(.65x) equation: 


Simplifying
391.50 = 3x + 4(0.65x)

Remove parenthesis around (0.65x)
391.50 = 3x + 4 * 0.65x

Multiply 4 * 0.65
391.50 = 3x + 2.6x

Combine like terms: 3x + 2.6x = 5.6x
391.50 = 5.6x

Solving
391.50 = 5.6x

Solving for variable 'x'.

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

Add '-5.6x' to each side of the equation.
391.50 + -5.6x = 5.6x + -5.6x

Combine like terms: 5.6x + -5.6x = 0.0
391.50 + -5.6x = 0.0

Add '-391.50' to each side of the equation.
391.50 + -391.50 + -5.6x = 0.0 + -391.50

Combine like terms: 391.50 + -391.50 = 0.00
0.00 + -5.6x = 0.0 + -391.50
-5.6x = 0.0 + -391.50

Combine like terms: 0.0 + -391.50 = -391.5
-5.6x = -391.5

Divide each side by '-5.6'.
x = 69.91071429

Simplifying
x = 69.91071429

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