30=-5(2a-7)

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Solution for 30=-5(2a-7) equation: 



30=-5(2a-7)

We move all terms to the left:

30-(-5(2a-7))=0



We calculate terms in parentheses: -(-5(2a-7)), so:

-5(2a-7)

We multiply parentheses

-10a+35

Back to the equation:

-(-10a+35)



We get rid of parentheses

10a-35+30=0

We add all the numbers together, and all the variables

10a-5=0

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

10a=5

a=5/10

a=1/2

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