2a+4-5a=19

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Solution for 2a+4-5a=19 equation: 



2a+4-5a=19

We move all terms to the left:

2a+4-5a-(19)=0

We add all the numbers together, and all the variables

-3a-15=0

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

-3a=15

a=15/-3

a=-5

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