.4x+.25(100-x)=28*100

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Solution for .4x+.25(100-x)=28*100 equation: 



.4x+.25(100-x)=28*100

We move all terms to the left:

.4x+.25(100-x)-(28*100)=0

We add all the numbers together, and all the variables

.4x+.25(-1x+100)-2800=0

We multiply parentheses

.4x-0.25x+25-2800=0

We add all the numbers together, and all the variables

0.15x-2775=0

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

0.15x=2775

x=2775/0.15

x=18500

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