Question

[Phạm Nguyễn Minh Trung]

Ai giúp mình với:

4(x-3)=7^2-1^10

2(x-51)=2.2^3+20

9^x-1=9

(x-2)^4=16

Answer 1

[trongnghia]

a)4.(x-3)=7.2-1.10

4.(x-3)=14-10

4.(x-3)=4

x-3=4:4

x-3=1

x=1+3

x=4

b)2.(x-51)=2.2.3+20

2.(x-51)=32

x-51=32:2

x-51=16

x=16+51

x=67

c)9.x-1=9

9.x=9+1

9.x=10

x=10:9

x=1,1111111...

(x-2).4=16

x-2=16:4

x-2=4

x=4+2

x=6