.90=65+.80x

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Solution for .90=65+.80x equation: 



.90=65+.80x

We move all terms to the left:

.90-(65+.80x)=0

We add all the numbers together, and all the variables

-(.80x+65)+.90=0

We add all the numbers together, and all the variables

-(.80x+65)+0.9=0

We get rid of parentheses

-.80x-65+0.9=0

We add all the numbers together, and all the variables

-0.8x-64.1=0

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

-0.8x=64.1

x=64.1/-0.8

x=-80+0.099999999999994/0.8

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