7x +3=66
7x =66-3
7x =63
x =63/7
x =9..Vậy x bằng 9
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KJ
25 tháng 11 2021 lúc 7:56
1, Tìm số nguyên x, biết:
a, x - 17 = 23
b, 2(x - 1) = 7 + (-3)
c, 4.(x + 5)3 - 7 = 101
d, 2x+1 .3 + 15 = 39
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
Tìm số nguyên x :
a, x=3/4+-1/12
b, x/14= 1/7+ -3/14
c,8/17+5/17<x/17<6/17+9/17
d, -6/7+3/35<x/35<-2/5+3/7
243-4*(2x+17)=18
x*x^3=81
(7x+6)*5^5=5^8
Tìm x
a) 2^x.4128
b) x^{17}x
c) (2x - 2)^38
d) (x - 6)^3left(x-6right)^2
e) (7x - 11)^3 2^5 .5^2 + 200
f) 3 + 2^{x-1} 24 - [4^2 - (2^2 -1)]
GIÚP MÌNH NHA!
Đọc tiếp
Tìm x
a) \(2^x.4=128\)
b) \(x^{17}=x\)
c) (2x - 2)\(^3=8\)
d) (x - 6)\(^3=\left(x-6\right)^2\)
e) (7x - 11)\(^3\) = 2\(^5\) .5\(^2\) + 200
f) 3 + 2\(^{x-1}\) = 24 - [4\(^2\) - (2\(^2\) -1)]
GIÚP MÌNH NHA!
1)2x+1×22014=22015
2)7x-2x=617:615+44:11
3)3x=9
4)7x-x=521:519+3×22-70
5)4x=64
6)9x-1=9
7)2x:25=1
8)(5x-9)3=216
9)5×37x-11=135
10)2×3x=19×38-812
Bài 1:Tìm x
a) 5x+x=39-3^11:3^9
b) 7x-x=5^21:5^19+3.2^2-7^0
c) 7x-2x =6^17:6^15+44:11
TÌM X :
a) ( x + 5/6 ) × 12/5 - 5/4 = 35%
b) 3 × ( x - 1/2 ) - 5 × ( x + 3/5 ) = -x + 1/5
c) 5/2 - 3 × ( 1/3 - x ) = 1/4 - 7x
d) 1/2x + 4/5 × ( 5/2 + x ) = 15 /4
1,Tim tap hop cac so x \(\varepsilon\)Z,biet
a.-5/7+1+30/-7_<x_< -1/6+1/3+5/6
b.8/17+5/17<x/17,6/17+9/17
c.-6/7+3/35<x<-2/5+3/7