0.3(20-x)+0.5x=15

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Solution for 0.3(20-x)+0.5x=15 equation: 



0.3(20-x)+0.5x=15

We move all terms to the left:

0.3(20-x)+0.5x-(15)=0

We add all the numbers together, and all the variables

0.3(-1x+20)+0.5x-15=0

We add all the numbers together, and all the variables

0.5x+0.3(-1x+20)-15=0

We multiply parentheses

0.5x-0.3x+6-15=0

We add all the numbers together, and all the variables

0.2x-9=0

We move all terms containing x to the left, all other terms to the right

0.2x=9

x=9/0.2

x=45

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