0.40x+0.15(100-x)=19

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Solution for 0.40x+0.15(100-x)=19 equation: 



0.40x+0.15(100-x)=19

We move all terms to the left:

0.40x+0.15(100-x)-(19)=0

We add all the numbers together, and all the variables

0.40x+0.15(-1x+100)-19=0

We multiply parentheses

0.40x-0.15x+15-19=0

We add all the numbers together, and all the variables

0.25x-4=0

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

0.25x=4

x=4/0.25

x=16

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