0.4x=-30

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Solution for 0.4x=-30 equation: 



0.4x=-30

We move all terms to the left:

0.4x-(-30)=0

We add all the numbers together, and all the variables

0.4x+30=0

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

0.4x=-30

x=-30/0.4

x=-75

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