.9+2a=-3-4a

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Solution for .9+2a=-3-4a equation: 



.9+2a=-3-4a

We move all terms to the left:

.9+2a-(-3-4a)=0

We add all the numbers together, and all the variables

2a-(-4a-3)+.9=0

We add all the numbers together, and all the variables

2a-(-4a-3)+0.9=0

We get rid of parentheses

2a+4a+3+0.9=0

We add all the numbers together, and all the variables

6a+3.9=0

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

6a=-3.9

a=-3.9/6

a=-1/1.5384615384615

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