Question

> Which expression is equivalent to 1/3b - 7

1) 1/3(b+21)

2) 1/3(b-21)

3) -1/3(b-21)

4)-1/3(b+21)

Answer 1

1/3(b-21) is equivalent to 1/3b-7

Answer 2

option 2

Explanation:

1/3(b-21)= 1/3b - 7

1/3 of -21 is -7