45+x=20-4x

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Solution for 45+x=20-4x equation: 



45+x=20-4x

We move all terms to the left:

45+x-(20-4x)=0

We add all the numbers together, and all the variables

x-(-4x+20)+45=0

We get rid of parentheses

x+4x-20+45=0

We add all the numbers together, and all the variables

5x+25=0

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

5x=-25

x=-25/5

x=-5

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