0.8x=0.4x+21

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Solution for 0.8x=0.4x+21 equation:


Simplifying
0.8x = 0.4x + 21

Reorder the terms:
0.8x = 21 + 0.4x

Solving
0.8x = 21 + 0.4x

Solving for variable 'x'.

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

Add '-0.4x' to each side of the equation.
0.8x + -0.4x = 21 + 0.4x + -0.4x

Combine like terms: 0.8x + -0.4x = 0.4x
0.4x = 21 + 0.4x + -0.4x

Combine like terms: 0.4x + -0.4x = 0.0
0.4x = 21 + 0.0
0.4x = 21

Divide each side by '0.4'.
x = 52.5

Simplifying
x = 52.5

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