-(x+81)=(2x+12)-(5+x)
-x-81=2x+12-5-x
-x+x-2x=12-5+81
2x=88
x=88:-2
x=-44
Các câu hỏi tương tự
tìm số nguyên x, biết:
a) 353-x=46+(3x-21)
b) -(x+81)=(2x+12)-(5+x)
c)-x+821+534=499+(x-84)
d) x+53=(400-9x)-447
Tìm số nguyên x, biết:
a) 353-x=46+(3x-21). b) -(x+81)=(2x+12)-(5+x).
c) (-x+821+534)=499+(x-84). d) x+53=(400-9x)-447.
Tìm số nguyên x biết:
a) x-96=(443-x)-15
b) (x-12)-15=(20-7)-(18-x)
c) 353-x=46+(3x-21)
d) -(x+81)=(2x+12)-(5+x)
e) (-x+821+534)=499+(x-84)
g) x+53= (400-9x)-447
Mấy bạn giúp mình vs:
353 - x = 46 + ( 3x - 21 )
Bài 4: Tìm số nguyên x biết
a, 2x .7 = 224 b, x10 = x c, ( 2x + 1)3 = 125 d, ( x-5)4= (x - 5)6
e) |2x - 5| - 1 = 12 g) 353 – x = 46 + (3x + 21)
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
x+35=17-x2x-23=-x-23x-11=33+5x13-(2x+5)=21+(22-x)(2x-9)-62=-5x+615+(-x+7)=-46-(-2x+7)x+30%x=-1,3x-25%x=\(\frac{1}{2}\)\(\frac{2}{3}\)x+\(\frac{1}{2}x=\frac{5}{2}\)\(\frac{2}{3}x=\frac{5}{12}+\frac{1}{2}x\)
Xem chi tiết
-17.(-3)-(x+29)=-11-3x
15-2x=-11-3x
-17-4x=-19.3-2x
46-(52-x)=12.(-7)+2x