2a-1=4+5

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



2a-1=4+5

We move all terms to the left:

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

We add all the numbers together, and all the variables

2a-1-9=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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