Question

Which model shows two equal expressions when a = 4?

A. a + 1 + 1 + 1 + 1 = 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1
B. a + a + a + a = 1
C. a + a + a + a = 1 + 1 + 1 + 1
D. a + a = 1 + 1 + 1 + 1 + 1 + 1

Answer 1

a

Explanation:

a+1+1+1+1+1=8

and 1+1+1+1+1+1+1+1=8

Answer 2

A

Explanation:

a + 1 + 1 + 1 + 1 = 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1

a+4=8

8-4=a

4=a