y+30%y=-1,3
100%y+30%y=-1,3
130%y=-1,3
130/100*x=-1,3
x =-1,3:130/100
x =-1
không chắc đâu nha!
y+30%y=-1,3
100%y+30%y=-1,3
130%y=-1,3
130/100*x=-1,3
x =-1,3:130/100
x =-1
không chắc đâu nha!
Tinh x,y,z biet:
x - y = 2018
y - z = -2019
z + x = 2020
Giup minh nhe!
tìm x, y thuoc z biet :
(2x-1)(2y-3x)=-24
xy-x+y=1
giup minh nhe sarah xin cam on
Tim n thuoc N biet so n co 30 uoc va khi phan tich thanh thua so nguyen to thi co dang n = 2^x × 3^y biet x+y =8
Tim n thuoc N , biet so n co 30 uoc va khi phan tich thanh thua so nguyen to thi co dang n = 2^x × 3^y biet x + y = 8
Minh moi vao nhom giup minh voi :
Tim x va y biet : (2x+1)(y-5)=12
La toan lop 6 nhe !
co 1 so keo muon chia thanh cac goi qua deu nhau, khi chia thanh goi 20 cai, goi 25 cai va goi 30 cai deu du 5 cai. Tinh so keo hien co. biet rang so keo lon hon 100 va nho hon 1600
GIUP TO NHE!
CAU 1: Chung to rang voi moi so nguyen n thi: (n-1).(n+2)+12 chia het cho 9.
CAU 2: Tm cac cap so nguyen (x; y) biet:
a) x.y=-2
b) (2x-1). (y+1)=14
c) xy= x+y
d) xy= x-y
GIAI NHANH GIUP TO NHE !
A= Ox + by + oy + bx biet a+ b =-2 va x+y = 17
Giup minh nhe
Tim x,y,z biet : ( x - 1/3 ) x ( y - 1/5 ) x ( z + 1/4 ) = 0 va x+y = y - 1 = z+1
giai giup minh nhe minh rat can den day