1.5(9-c)+3c=21

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Solution for 1.5(9-c)+3c=21 equation: 



1.5(9-c)+3c=21

We move all terms to the left:

1.5(9-c)+3c-(21)=0

We add all the numbers together, and all the variables

1.5(-1c+9)+3c-21=0

We add all the numbers together, and all the variables

3c+1.5(-1c+9)-21=0

We multiply parentheses

3c-1.5c+13.5-21=0

We add all the numbers together, and all the variables

1.5c-7.5=0

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

1.5c=7.5

c=7.5/1.5

c=5

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