10+8a-(a+9)=50

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Solution for 10+8a-(a+9)=50 equation: 



10+8a-(a+9)=50

We move all terms to the left:

10+8a-(a+9)-(50)=0

We add all the numbers together, and all the variables

8a-(a+9)-40=0

We get rid of parentheses

8a-a-9-40=0

We add all the numbers together, and all the variables

7a-49=0

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

7a=49

a=49/7

a=7

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