4(a-1)/5=10

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Solution for 4(a-1)/5=10 equation: 



4(a-1)/5=10

We move all terms to the left:

4(a-1)/5-(10)=0

We multiply all the terms by the denominator


4(a-1)-10*5=0

We add all the numbers together, and all the variables

4(a-1)-50=0

We multiply parentheses

4a-4-50=0

We add all the numbers together, and all the variables

4a-54=0

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

4a=54

a=54/4

a=13+1/2

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