Question

solve 21 and 22. please

Answer 1

1) x- 2(2x-1)=0

x-4x+2=0

-3x=0-2

-3x= -2

x= (-2)/(-3)=2/3

Answer 2

2^x=4^2x-1
2^x=2^2(2x-1)
x=4x-2
-3x=-2
x=2/3