Question

If 2* – 21-1 = 16, then the value of x? is equal to:
(a) 4
(b) 9
(c) 16
(d 25
4?-
16
= 16​

Answer 1

Answer:

2x*-21-1=16

2x-22=16

2x=16+22

2x=38

X=38/2

X=19

Answer 2

Answer:

2x-21-1=16

2x-22=16

2x-22-16=0

2x-38=0

2x=38

x=38/2

x=19