4(a+2)-9(9-1)=-4(2a+9)-16

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Solution for 4(a+2)-9(9-1)=-4(2a+9)-16 equation: 



4(a+2)-9(9-1)=-4(2a+9)-16

We move all terms to the left:

4(a+2)-9(9-1)-(-4(2a+9)-16)=0

We add all the numbers together, and all the variables

4(a+2)-(-4(2a+9)-16)-98=0

We multiply parentheses

4a-(-4(2a+9)-16)+8-98=0



We calculate terms in parentheses: -(-4(2a+9)-16), so:

-4(2a+9)-16

We multiply parentheses

-8a-36-16

We add all the numbers together, and all the variables

-8a-52

Back to the equation:

-(-8a-52)



We add all the numbers together, and all the variables

4a-(-8a-52)-90=0

We get rid of parentheses

4a+8a+52-90=0

We add all the numbers together, and all the variables

12a-38=0

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

12a=38

a=38/12

a=3+1/6

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