Question

Solve for a. (look at photo)

ab + c = d

b
(c-d)
Oọa (d-c)
a=
b
O
a = b +
010
C
d

Answer 1

2nd bullet point (B)

Explanation:

First subtract the c and then divde by b

Answer 2

Second Choice

Explanation:

• ab + c = d

Solve for a.

Solution:

Add -c to both sides:

• ab+c+(-c) = d + (-c)
• ab+c-c = d - c
• ab = d - c

Divide both sides by b:

• 
  `\rm \: \cfrac{ab}{b} = \cfrac{d - c}{b}`

• 
  `\boxed{ \rm \: a = \cfrac{d - c}{b}}`

Second choice is accurate.