21x+8=15-4x

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Solution for 21x+8=15-4x equation:


Simplifying
21x + 8 = 15 + -4x

Reorder the terms:
8 + 21x = 15 + -4x

Solving
8 + 21x = 15 + -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 + 21x + 4x = 15 + -4x + 4x

Combine like terms: 21x + 4x = 25x
8 + 25x = 15 + -4x + 4x

Combine like terms: -4x + 4x = 0
8 + 25x = 15 + 0
8 + 25x = 15

Add '-8' to each side of the equation.
8 + -8 + 25x = 15 + -8

Combine like terms: 8 + -8 = 0
0 + 25x = 15 + -8
25x = 15 + -8

Combine like terms: 15 + -8 = 7
25x = 7

Divide each side by '25'.
x = 0.28

Simplifying
x = 0.28

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