(3x-8)=(4x-21)

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Solution for (3x-8)=(4x-21) equation:


Simplifying
(3x + -8) = (4x + -21)

Reorder the terms:
(-8 + 3x) = (4x + -21)

Remove parenthesis around (-8 + 3x)
-8 + 3x = (4x + -21)

Reorder the terms:
-8 + 3x = (-21 + 4x)

Remove parenthesis around (-21 + 4x)
-8 + 3x = -21 + 4x

Solving
-8 + 3x = -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.
-8 + 3x + -4x = -21 + 4x + -4x

Combine like terms: 3x + -4x = -1x
-8 + -1x = -21 + 4x + -4x

Combine like terms: 4x + -4x = 0
-8 + -1x = -21 + 0
-8 + -1x = -21

Add '8' to each side of the equation.
-8 + 8 + -1x = -21 + 8

Combine like terms: -8 + 8 = 0
0 + -1x = -21 + 8
-1x = -21 + 8

Combine like terms: -21 + 8 = -13
-1x = -13

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

Simplifying
x = 13

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