4.2=-2.5x

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Solution for 4.2=-2.5x equation: 



4.2=-2.5x

We move all terms to the left:

4.2-(-2.5x)=0

We get rid of parentheses

2.5x+4.2=0

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

2.5x=-4.2

x=-4.2/2.5

x=-1+1/1.4705882352941

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