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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:We get rid of parentheses
d-(-1.4)
We add all the numbers together, and all the variables
d+1.4
Back to the equation:
-(d+1.4)
-d-1.4+31=0
We add all the numbers together, and all the variables
-1d+29.6=0
We move all terms containing d to the left, all other terms to the right
-d=-29.6
d=-29.6/-1
d=29+0.6/1
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