Question

Solve A = 5(b + 2c) for c in terms of A and b.

Answer 1

lots of ways to do this
we can divide by 5 to get
\[\frac{A}{5}=b+2c\] subtract b to get
\[\frac{A}{5}-b=2c\] divide by 2 to get
\[\frac{A}{10}-\frac{b}{2}=c\] that is one way

Answer 2

A=5b+10c
c=(A-5b)/10

Answer 3

or we can multiply out first and get
\[A=5B+10c\] then subtract \(5b\) and get
\[A-5b=10c\] divide by 10 and get
\[\frac{A-5b}{10}=c\]

Answer 4

whatever you like best