8x-3=4x-21

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


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

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

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

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

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

Combine like terms: 4x + -4x = 0
-3 + 4x = -21 + 0
-3 + 4x = -21

Add '3' to each side of the equation.
-3 + 3 + 4x = -21 + 3

Combine like terms: -3 + 3 = 0
0 + 4x = -21 + 3
4x = -21 + 3

Combine like terms: -21 + 3 = -18
4x = -18

Divide each side by '4'.
x = -4.5

Simplifying
x = -4.5

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