0.5(x+10)+0.3x=21

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Solution for 0.5(x+10)+0.3x=21 equation:


Simplifying
0.5(x + 10) + 0.3x = 21

Reorder the terms:
0.5(10 + x) + 0.3x = 21
(10 * 0.5 + x * 0.5) + 0.3x = 21
(5 + 0.5x) + 0.3x = 21

Combine like terms: 0.5x + 0.3x = 0.8x
5 + 0.8x = 21

Solving
5 + 0.8x = 21

Solving for variable 'x'.

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

Add '-5' to each side of the equation.
5 + -5 + 0.8x = 21 + -5

Combine like terms: 5 + -5 = 0
0 + 0.8x = 21 + -5
0.8x = 21 + -5

Combine like terms: 21 + -5 = 16
0.8x = 16

Divide each side by '0.8'.
x = 20

Simplifying
x = 20

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