Question

Which algebraic expression is equivalent to the expression below?

7(4x +9) - 4
A. 28X + 63
B. 28x + 5
C. 28x + 35
D. 28x +59​

Answer 1

The answer is D

Explanation:

Firstly, you have to get rid of brackets by expanding :

`7(4x + 9) - 4`

`= 7(4x) + 7(9) - 4`

`= 28x + 63 - 4`

Next you have to simplify :

`28x + 63 - 4`

`= 28x + 59`

Answer 2

Explanation:

7(4x + 9) - 4

= (7 × 4x) + (7 × 9) - 4

= 28x + 63 - 4

= 28x + 59

So, 7(4x + 9) - 4 is equivalent to 28x + 59 (D)

Hope it helpful and useful :)