Question

9.. If {x-1} = 7, then x = ?
a. {8,-6)
b. (-8,6)
C.(8,6)
d.(None)​

Answer 1

Answer:

none

Explanation:

ans is 8. (transfer the variable one side)

x=7+1

x=8

Answer 2

Answer:

none

Explanation:

x-1=7

add 1 to b/s

x-1+1=7+1

x=8