.3(x+20)+.3x=15

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Solution for .3(x+20)+.3x=15 equation:


Simplifying
0.3(x + 20) + 0.3x = 15

Reorder the terms:
0.3(20 + x) + 0.3x = 15
(20 * 0.3 + x * 0.3) + 0.3x = 15
(6 + 0.3x) + 0.3x = 15

Combine like terms: 0.3x + 0.3x = 0.6x
6 + 0.6x = 15

Solving
6 + 0.6x = 15

Solving for variable 'x'.

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

Add '-6' to each side of the equation.
6 + -6 + 0.6x = 15 + -6

Combine like terms: 6 + -6 = 0
0 + 0.6x = 15 + -6
0.6x = 15 + -6

Combine like terms: 15 + -6 = 9
0.6x = 9

Divide each side by '0.6'.
x = 15

Simplifying
x = 15

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