Question

Solve for b in the formula 3a+2b=c

Answer 1

The answer is:   " b  =  $\frac{c - 3a}{2}$ " .
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Explanation:
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Given:  
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" 3a + 2b = c " ;  solve for "b" ; 

Subtract "3a" from each side of the equation:

3a + 2b - 3a = c - 3a  ; 

to get: 

2b = c - 3a ; 

Divide each side of the equation by "2" ; 
     to isolate "b" on one side of the equation; & to solve for "b" ; 

2b / 2 = (c - 3a) / 2 ; 

to get: 

   b = (c - 3a) / 2 .
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The answer is:   " b  =  $\frac{c - 3a}{2}$ " .
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Answer 2

Make b the subject of formula
3a + 2b = c
2b = c - 3a
b = (c - 3a)/2
Replacing the values of c & a would give you an answer for b.

Hope it helped!