.5d+.4=-2d

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Solution for .5d+.4=-2d equation: 



.5d+.4=-2d

We move all terms to the left:

.5d+.4-(-2d)=0

We add all the numbers together, and all the variables

.5d-(-2d)+0.4=0

We get rid of parentheses

.5d+2d+0.4=0

We add all the numbers together, and all the variables

2.5d+0.4=0

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

2.5d=-0.4

d=-0.4/2.5

d=-0.4/2.5

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