(0.3d)+(-2.8)=-4

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Solution for (0.3d)+(-2.8)=-4 equation: 



(0.3d)+(-2.8)=-4

We move all terms to the left:

(0.3d)+(-2.8)-(-4)=0

We add all the numbers together, and all the variables

(+0.3d)+(-2.8)-(-4)=0

We add all the numbers together, and all the variables

(+0.3d)+1.2=0

We get rid of parentheses

0.3d+1.2=0

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

0.3d=-1.2

d=-1.2/0.3

d=-4

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