.45x+.40(280-x)=114.75

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Solution for .45x+.40(280-x)=114.75 equation: 



.45x+.40(280-x)=114.75

We move all terms to the left:

.45x+.40(280-x)-(114.75)=0

We add all the numbers together, and all the variables

.45x+.40(-1x+280)-(114.75)=0

We add all the numbers together, and all the variables

.45x+.40(-1x+280)-114.75=0

We multiply parentheses

.45x-0.4x+112-114.75=0

We add all the numbers together, and all the variables

0.05x-2.75=0

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

0.05x=2.75

x=2.75/0.05

x=55

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