Question

C(a+b)-d = f, solve for a

Answer 1

add d to both sides

c(a+b) = f + d

divide away c

a+b = (f+d)/c

subtract b from both sides:

a=[(f+d)/c]-b

Answer 2

c(a + b) - d = f

• Add d to both sides.

c(a + b) = f + d

• Divide both sides by c.

$\frac{c(a+b)}{c} = \frac{f+d}{c}$

• Rewrite the equation.

a + b = $\frac{f+d}{c}$

• Subtract b from both sides.

a = $\frac{f+d}{c} - b$

• Rearrange the variables from first to last in the alphabet.

Answer:

a = -b + $\frac{d+f}{c}$