3(3+x)=4(x-1)

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Solution for 3(3+x)=4(x-1) equation: 


Simplifying
3(3 + x) = 4(x + -1)
(3 * 3 + x * 3) = 4(x + -1)
(9 + 3x) = 4(x + -1)

Reorder the terms:
9 + 3x = 4(-1 + x)
9 + 3x = (-1 * 4 + x * 4)
9 + 3x = (-4 + 4x)

Solving
9 + 3x = -4 + 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.
9 + 3x + -4x = -4 + 4x + -4x

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

Combine like terms: 4x + -4x = 0
9 + -1x = -4 + 0
9 + -1x = -4

Add '-9' to each side of the equation.
9 + -9 + -1x = -4 + -9

Combine like terms: 9 + -9 = 0
0 + -1x = -4 + -9
-1x = -4 + -9

Combine like terms: -4 + -9 = -13
-1x = -13

Divide each side by '-1'.
x = 13

Simplifying
x = 13

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