2(q-1)=4q-7

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Solution for 2(q-1)=4q-7 equation: 



2(q-1)=4q-7

We move all terms to the left:

2(q-1)-(4q-7)=0

We multiply parentheses

2q-(4q-7)-2=0

We get rid of parentheses

2q-4q+7-2=0

We add all the numbers together, and all the variables

-2q+5=0

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

-2q=-5

q=-5/-2

q=2+1/2

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