40*0.15+0.4(40+x)=0.2

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Solution for 40*0.15+0.4(40+x)=0.2 equation: 



40*0.15+0.4(40+x)=0.2

We move all terms to the left:

40*0.15+0.4(40+x)-(0.2)=0

We add all the numbers together, and all the variables

0.4(x+40)+40*0.15-(0.2)=0

We add all the numbers together, and all the variables

0.4(x+40)+5.8=0

We multiply parentheses

0.4x+16+5.8=0

We add all the numbers together, and all the variables

0.4x+21.8=0

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

0.4x=-21.8

x=-21.8/0.4

x=-54+0.2/0.4

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