Question

find x if (1/2)^1990-(1/2)^1991=2x

Answer 1

Answer:

Step-by-step explanation:

(1/2)^1990 -(1/2)^1991=2^x

(1/2)^1990-(1/2)^1990+(1/2)^1=2^x

2^-1=2^x

-1=x

Answer 2

Answer:

step by step explanation above my ans