5(3-x)=4x-21

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Solution for 5(3-x)=4x-21 equation:


Simplifying
5(3 + -1x) = 4x + -21
(3 * 5 + -1x * 5) = 4x + -21
(15 + -5x) = 4x + -21

Reorder the terms:
15 + -5x = -21 + 4x

Solving
15 + -5x = -21 + 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.
15 + -5x + -4x = -21 + 4x + -4x

Combine like terms: -5x + -4x = -9x
15 + -9x = -21 + 4x + -4x

Combine like terms: 4x + -4x = 0
15 + -9x = -21 + 0
15 + -9x = -21

Add '-15' to each side of the equation.
15 + -15 + -9x = -21 + -15

Combine like terms: 15 + -15 = 0
0 + -9x = -21 + -15
-9x = -21 + -15

Combine like terms: -21 + -15 = -36
-9x = -36

Divide each side by '-9'.
x = 4

Simplifying
x = 4

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