-0.8=0.7+a/0.4

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Solution for -0.8=0.7+a/0.4 equation:



-0.8=0.7+a/0.4
We move all terms to the left:
-0.8-(0.7+a/0.4)=0
We add all the numbers together, and all the variables
-(a/0.4+0.7)-0.8=0
We get rid of parentheses
-a/0.4-0.7-0.8=0
We multiply all the terms by the denominator
-a-(0.7)*0.4-(0.8)*0.4=0
We add all the numbers together, and all the variables
-1a-0.6=0
We move all terms containing a to the left, all other terms to the right
-a=0.6
a=0.6/-1
a=-0.6/1

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