2a-4+5(a-1)=19

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Solution for 2a-4+5(a-1)=19 equation: 



2a-4+5(a-1)=19

We move all terms to the left:

2a-4+5(a-1)-(19)=0

We add all the numbers together, and all the variables

2a+5(a-1)-23=0

We multiply parentheses

2a+5a-5-23=0

We add all the numbers together, and all the variables

7a-28=0

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

7a=28

a=28/7

a=4

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