.9=(.4x)+.77

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Solution for .9=(.4x)+.77 equation: 



.9=(.4x)+.77

We move all terms to the left:

.9-((.4x)+.77)=0

We add all the numbers together, and all the variables

-((+.4x)+.77)+.9=0

We add all the numbers together, and all the variables

-((+.4x)+.77)+0.9=0



We calculate terms in parentheses: -((+.4x)+.77), so:

(+.4x)+.77

We add all the numbers together, and all the variables

(+.4x)+0.77

We get rid of parentheses

.4x+0.77

Back to the equation:

-(.4x+0.77)



We get rid of parentheses

-.4x-0.77+0.9=0

We add all the numbers together, and all the variables

-0.4x+0.13=0

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

-0.4x=-0.13

x=-0.13/-0.4

x=0.13/0.4

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