Các câu hỏi tương tự
Tim x
1) 5x = 120 : 2
2) 3x + 27 = 45
3) 73 + x - 122 = 234 : 2
4) 32 - 2 ( x -1 ) = 12
5) 3 ( x + 1 ) - 15 = 36
6) 21 - ( 4x - 16 ) = 21
7)13 x - 3x = 500
8) 9x + x - 35 = 65
Giup e nha, em can gap
tim x
2 mũ x+2 mũ x+1 =96
(3x+2)mũ 3=2.32
5 mũ x+1 -5x =500
1 x 32+7x8+4x
=200x
Bài3 tính nhanh
c. 456:2x 18+456:3-102
bài 4 tìm số tự nhiên n sao cho
121/27x 54/11<n<100/21:25/126
Bài5
x/17=60/204 6+x/33=7/11 12+x/43-x=2/3
x/5<3/7 1<11/x<2 15/26+x/16=46/52
bài6 tính nhanh
21,251+6,058+0,749+1,042 1,53+5,309+12,47+5,691
bài1
a)21-2(x+6)=15
b)3^x+1=27
c)14-x=36
d)-3x+25=-2
e)37-2(x+6)=29
h)2^x-1=16
Tim x
(3x-6).3=33
(x-1)2:2=8
3x+1-2.32=32
4221:(x-16)=21
Tinh
2+22+23+24+............+2100
bai 1)tim x biet
a )24-(36+5)=x
b)14-21=(13-x)-(15+8)
bai 2) tim x biet
a)17-x=-25+(-16+9)
b)3x-21=-19-(-2x)
a) 16 - 18/x| = -8 -14|x|
b) 5 x|+7.(2/x|-3) =4.(x-4)+25
e) 15-3|4x +2| = 3 8) 18 -4.(6-2|x|) = - 3.(4|x|+5)+29
8) 27-5/x -10 = 4|x-10| - 18
h) 510 + 3x|-21 = 7- 2|15+3x|
c) 43x +2|-16= 20
d) 8|x - 1|-4 = 12+6|x-1|
giúp em với
A) 78-2x=42
B)6x+39=75
C) 2^3.x+ 2.x=25.2^2
D) 21+7x = 56
E) 5x +2x = 6^2-5^0
F)15x + 3x = 450 : 2+9
G) 6x+x=5^11: 5^9+3^1
H) 5x + 3x=3^11: 3^8.4+12
i) 2^3.x + 2^2.x =136-2^20 : 2^16
j) 7x -x= 5^21: 5^19+3.2^2
k) 7x - 2x= 6^17: 6^15 + 44 :11
l) 0: x =0 m) 3^x=27 n) 4^x= 64
o) 2^x = 32 p) 9^x-1=81 q) x^4=16
r) 3^x :3^
p) 9^x-1=81
q) x^4=165=1
tim x bit x thuoc N
3x-5=1
2x+2x+1=96
(3.x-2)3=2.32
149-(35:x+3).17=13