.8(u-3)=18.40

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Solution for .8(u-3)=18.40 equation: 



.8(u-3)=18.40

We move all terms to the left:

.8(u-3)-(18.40)=0

We add all the numbers together, and all the variables

.8(u-3)-(18.4)=0

We add all the numbers together, and all the variables

.8(u-3)-18.4=0

We multiply parentheses

0.8u-2.4-18.4=0

We add all the numbers together, and all the variables

0.8u-20.8=0

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

0.8u=20.8

u=20.8/0.8

u=26

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