4+8x=3x+21

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


Simplifying
4 + 8x = 3x + 21

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

Solving
4 + 8x = 21 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
4 + 8x + -3x = 21 + 3x + -3x

Combine like terms: 8x + -3x = 5x
4 + 5x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
4 + 5x = 21 + 0
4 + 5x = 21

Add '-4' to each side of the equation.
4 + -4 + 5x = 21 + -4

Combine like terms: 4 + -4 = 0
0 + 5x = 21 + -4
5x = 21 + -4

Combine like terms: 21 + -4 = 17
5x = 17

Divide each side by '5'.
x = 3.4

Simplifying
x = 3.4

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