Question

Use r = 2

When r + 4(2 + r) – 12 =

Answer 1

6

Explanation:

r + 4(2 + r) - 12 =

2 + 4(2 + 2) - 12 =

2 + 4(4) - 12 =

2 + 16 - 12 =

18 - 12 =

= 6

Answer 2

6

Explanation:

2+r=4

4x4=16

16+r=18

18-12=6