x+13 = 5
x= 5-13
x= 5+ (-13)
x= (-8) nha bạn!
-8 neu x nguyen
khong co so nao neu x tu nhien
De tim so tu nhien x ,biet rang neu lay so do tru di 3 roi chia cho 8 thi dc 12 ,ta co the viet (x-3) :8=12roi tim x , ta duoc x =99.
Bang cach lam nhu tren ,hay tim so tu nhien x,biet rang neu no nhan voi 3 roi tru di 8 ,sau do chia cho 4 thi dc 7
De tim so tu nhien x,biet rang neu lay so do tru di 3 roi chia cho 8 thi duoc 12 , ta co the viet (x-3) chia cho 8 =12 roi tim x,ta duoc x =99
Bang cach lam nhu tren ,hay tim so tu nhien x ,biet rang neu nhan no voi 3 roi tru di 8 ,sau do chia cho 4 thi duoc 7
Giup minh nha moi nguoi
ti so cua ai so bang 2:5. neu them 35 vao so thu nhat thi ti so cua chung se bang 11:1. tim hai so do
khi nguoi ta chia 1 so tu nhien cho 4 thi duoc so du la 3 neu chia so ay cho 5 thi thuong giam 2 don vi nhung so du van la 3? bang cach giai bang loi
ve n tia chung goc (n lon hon hoac bang 2),trong do khongco hai tia nao trung nhau
a,neu n=5 thi co bao nhieu goc tao thanh?
b,neu co 105 goc tao thanh thi nla bao nhieu?
So hoc sinh lop 6A bang \(\frac{4}{5}\)so hocsinh lop 6B . Neu chuyen 6 hoc sinh o lop 6B sang lop 6A thi so hoc sinh lop 6A bang \(\frac{14}{13}\). Tinh so hoc sinh moi lop ban ?
MINH CAN CACH LAM GAPPPPP
AI NHANH MINH TK LUON
tim hai so biet rang neu dem so thu nhat chia cho 3, so thu hai chia cho 5 thi duoc ket qua bang nhau va biet tong cua chung bang 346,8
so ket mot tuan hoc 3 to cua lop 6a dat duoc nhieu diem gioi neu lay 1/5 so diem gioi cua to 1 chia deu cho 2 to kia thi so diem gioi cua 3 to bang nhau neu to 1 duoc them 8 diem gioi nua thi so diem gioi cua to 1 bang tong so diem gioi cua 2 to kia hoi moi to duoc bao nhoieu diem gioi
Neu tang them 5 don vi vao thua so thu nhat thi tich moi la 595. Tim 2 thua so biet tich cua chung bang 420.
