1)
a)96-3(x+1)=42
3(x+1)=96-42
3(x+1)=54
x+1=54:3
x+1=18
x=18-1
x=17
b)12x-33=3^2.3^3
12x-33=243
12x=243+33
12x=276
x=276:12
x=23
c)24+5x=7^5:7^3
24+5x=49
5x=49-24
5x=25
x=25:5
x=5
d)(x+1)+(x+2)+.......+(x+100)=5750
100x+(1+2+...+100)=5750
100x+5050=5750
100x=5750-5050
100x=700
x=700:100
x=7
e)720:[41-(2x-5)]=2^3.5
720:[41-(2x-5)]=40
[41-(2x-5)]=720:40
[4
a,x=17
b,x=23
c,x=5
e,x-14
d thì pkải từ từ