Question

[nguyễn như linh]

bài1:

a)128-3(x+4)=23

b)[(4x+28).3+55]:5=35

c)(12-4^3).8^3=4.8^4

d)720:[41-(2x-5)]=2^3.5

e)2^x+2^x+1=48

f)(x-2)^2=(x-2)^4

Answer 1

[Laura]

128-3(x+4)=23

3(x+4)=128-23

3(x+4)=105

x+4=105:3

x+4=35

x=35-4

x=31

Vậy x=31

Học tốt