31=d+(-1;.4)

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Solution for 31=d+(-1;.4) equation: 



31=d+(-1.4)

We move all terms to the left:

31-(d+(-1.4))=0



We calculate terms in parentheses: -(d+(-1.4)), so:

d+(-1.4)

We add all the numbers together, and all the variables

d-1.4

Back to the equation:

-(d-1.4)



We get rid of parentheses

-d+1.4+31=0

We add all the numbers together, and all the variables

-1d+32.4=0

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

-d=-32.4

d=-32.4/-1

d=32+0.4/1

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