5(15-a)=20-9a

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Solution for 5(15-a)=20-9a equation: 



5(15-a)=20-9a

We move all terms to the left:

5(15-a)-(20-9a)=0

We add all the numbers together, and all the variables

5(-1a+15)-(-9a+20)=0

We multiply parentheses

-5a-(-9a+20)+75=0

We get rid of parentheses

-5a+9a-20+75=0

We add all the numbers together, and all the variables

4a+55=0

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

4a=-55

a=-55/4

a=-13+3/4

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