(0.4)(x)=20

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Solution for (0.4)(x)=20 equation: 



(0.4)(x)=20

We move all terms to the left:

(0.4)(x)-(20)=0

We multiply parentheses

0.4x-20=0

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

0.4x=20

x=20/0.4

x=50

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