-28=7(-3a-4)

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Solution for -28=7(-3a-4) equation:



-28=7(-3a-4)
We move all terms to the left:
-28-(7(-3a-4))=0
We calculate terms in parentheses: -(7(-3a-4)), so:
7(-3a-4)
We multiply parentheses
-21a-28
Back to the equation:
-(-21a-28)
We get rid of parentheses
21a+28-28=0
We add all the numbers together, and all the variables
21a=0
a=0/21
a=0

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