.4(x+10)+.4x=20

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Solution for .4(x+10)+.4x=20 equation: 



.4(x+10)+.4x=20

We move all terms to the left:

.4(x+10)+.4x-(20)=0

We add all the numbers together, and all the variables

.4x+.4(x+10)-20=0

We multiply parentheses

.4x+0.4x+4-20=0

We add all the numbers together, and all the variables

0.8x-16=0

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

0.8x=16

x=16/0.8

x=20

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