9a+4a=+2-18

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Solution for 9a+4a=+2-18 equation: 



9a+4a=+2-18

We move all terms to the left:

9a+4a-(+2-18)=0

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

13a+16=0

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

13a=-16

a=-16/13

a=-1+3/13

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