x + 12/43 - x = 2/3
x - x + 12/43 = 2/3
0 + 12/43 = 2/3
12/43 = 2/3 ( loại)
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tim so nguyen x biet x=12+43
ai biet giup minh voi
| - 18 | + ( - 12) va 2^3 .2^2+ 5^7 : 5^5 - 3^2 .6
va tim x biet
3^10 : ( 43- 4x ) = 3^7
bai 1 tim x biet
a)x-43+7=49-(50+3)
b)-(x-16)+70=45
bai2 tim x biet
a)2x-(-60)=3x-18
b)-45-5x=10-4x
tim x biet:
23.(43-x)=23
Tim xEZ biet
a) x + ( -45 )=(-62) + 17
b) x + 29=/-43/ + (-43)
c) 5 + / x+1/ =29
Bai 1 Tim x biet
a)162+(15-x0=125
b)x^3*x^2=2^7/4
c)5(x+27)=200
d)x-3=6-(19-23)
e)(x+32)-145=92
f) 2*3^x=162
g)9x-9=3^2/3
h)162-(15+x)=148
Bai 2 Thuc hien phep tinh
a)12+14+16+18+...+86+88
b)217+[43+(-217)+(-23)]
c) (-345)+[(-724)+345+224]
d)2^3*3-(12-36)
ai giúp mình bài này mình cho 3 like luôn
tim x ,biet
-(x+4)+(12+x)=2.x+12
tim x biet : (11/12+11/12.23+11/23.24+...+11/89.100) + x = 2/3
tim x dua vao quan he uoc boi:tim so tu nhien x sao cho x-1 la uoc cua 12tim so tu nhien x sao cho 2x+1 la uoc cua 28tim so tu nhien x sao cho x+15 la boi cua x+3tim cac so nguyen x,y sao cho (x+1)(y-2)3tim so nguyen x sao cho(x+2).(y-1)2tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180tim so nguyen to x,y biet x+y12 va UCLL (x:y)5tim so tu nhien x,y biet x+y32 va UCLL (x:y)8tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100x150tim so x nho nhat khac 0b biet...
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tim x dua vao quan he uoc boi:
tim so tu nhien x sao cho x-1 la uoc cua 12
tim so tu nhien x sao cho 2x+1 la uoc cua 28
tim so tu nhien x sao cho x+15 la boi cua x+3
tim cac so nguyen x,y sao cho (x+1)(y-2)=3
tim so nguyen x sao cho(x+2).(y-1)=2
tim so nguyen to x vua la uoc cua 275 vua la uoc cua 180
tim so nguyen to x,y biet x+y=12 va UCLL (x:y)=5
tim so tu nhien x,y biet x+y=32 va UCLL (x:y)=8
tim so tu nhien x biet x chia het cho10; xchia het cho12; x chia het cho15 va 100<x<150
tim so x nho nhat khac 0b biet x chia het cho 24 va 30
40 chia het cho x . 56 chia het cho x va x>6