Question

Which equation is true for the value b = 10?

1. 2(b + 4) = 16
2. 2(b + 2) = 40
3. 3(b – 2) = 24
4. 2(8 + b) = 42
5. 3(b – 4) = 20

Answer 1

when b = 10

1. 2(10 + 4) = 16
28 ≠ 16 FALSE

2. 2(10 + 2) = 40
24 ≠ 40 FALSE

3. 3(10 – 2) = 24
24 = 24 TRUE

4. 2(8 + 10) = 42
36 ≠ 42 FALSE


5. 3(10 – 4) = 20
18 ≠ 20 FALSE

Answer is
3. 3(b – 2) = 24