1+2a=-9+4a

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



1+2a=-9+4a

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2a-4a+9+1=0

We add all the numbers together, and all the variables

-2a+10=0

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

-2a=-10

a=-10/-2

a=+5

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