Question

1. Solve for x :
(i) 22x + 1 = 8
(ii) 25x - 1 = 4 x 23x + 1
(iii) 34x + 1 = (27)* + 1
(iv) (49)* + 4 = 72 x (343)* + 1​

Answer 1

1. 22x+1=8

22x=8-1

x=7/22

2. 25x=92x+1+1

25x-92x=2

67x=2

x=2/67

Answer 2

Step-by-step explanation:

1(i),22x+1=8 => 22x =8-1 => 22x =7 => x=22/7

(ii),25x-1=4×23x+1 => 25x-1= 92x+1 => -1-1 = 92x-25x => -2=67x => x= -2/67

(iii),34x+1=27x+1 => 34x-27x=1-1 => 7x=0 => x=0

(iv),49x+4=72×343x+1 => 49x+4=24696x+1 => 4-1=24696-49x =>3=24647x

                                                                                                     =>x=3/24247

          hope it helps mark as brilliant.