1.2x+0.8(20-x)=17.9

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Solution for 1.2x+0.8(20-x)=17.9 equation: 



1.2x+0.8(20-x)=17.9

We move all terms to the left:

1.2x+0.8(20-x)-(17.9)=0

We add all the numbers together, and all the variables

1.2x+0.8(-1x+20)-(17.9)=0

We add all the numbers together, and all the variables

1.2x+0.8(-1x+20)-17.9=0

We multiply parentheses

1.2x-0.8x+16-17.9=0

We add all the numbers together, and all the variables

0.4x-1.9=0

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

0.4x=1.9

x=1.9/0.4

x=4+0.3/0.4

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