Question

Select all the equations that are equivalent.

1. 52 = 8n + 4
2. 4(2n + 1) = 52
3. 4 = 52 – 8n
4. 4n = 48
5. n = 6

Answer 1

Answer:

1 , 2, 3, 5 are equivalent

1 , 2, 3, 5 are equivalentbut 4 is not.

Answer 2

Answer:

1)52=8n+4

52-4=8n

48=8n

n=6

2)4(2n+1)=52

8n+4=52

8n=52-4

8n=48

n=6

3)4=52-8n

4-52=-8n

-48=-8n

n=6

4)4n=48

n=12

5)n=6

hence 4 is not equivalent