Ta co
6/x=24/x-27
24/4x=24/x-27
4x=x-27
4x-x=-27
3x=-27
x=-9
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GIA TRI 1 PHAN SO THAY DOI THE NAO NEU TA THEM VAO TS VA GIU NGUYEN MS
GIA TRI 1 PHAN SO THAY DOI NHU THE NAO NEU TA THEM VAO TS 1 SO BANG MS VA GIU NGUYEN MS
Cho x va y la hai so nguyen duong biet tong gia tri tuyet doi cua hai so bang 20 Tinh x +y Cho x va y la hai so nguyen am biet tong gia tri tuyet doi cua hai so bang 20 Tim x + y
Xem chi tiết
Cho phân số -5/9
a) hoi phai cong them vao mau va bot di vao tu cho cung mot so nao e duoc phan so moi co gia ri bang phanso -7/12
b) hay tim mot so nao sao cho khi cong so do vao tu hthem vao mau hai lan so do thi duoc phan so co gia tri bang 1/3
Hay tim cac gia tri x nguyen de hai phan so sau bang nhau:\(\frac{x}{7}\),\(\frac{x+16}{35}\)
A=n-1/n+2
a, Voi gia tri nao thi A la phan so
b, Tim so nguyen n de A=0
c,tim so nguyen n de A co gia tri nguyen
tìm so x nguyen sao cho phan so -3x-15/2x co gia tri bang 3
bai 1 : tim cac so nguyen n sao cho cac phan so sau co gia tri nguyen:a) frac{n}{n-2}bai 2 : tim tat ca cac phan so bang phan so frac{8}{-12}mak tu so a cua phan so thoa man -4le a 17.bai 3 : cho A frac{n+1}{n-1}.Voi gia tri nao cua n thi Ala mot so chan ? Mot so nguyen am ?GIUP MK NHA MK DAG CAN GAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! AI NHANH VA DUNG THI MK SE TICK CHO NHA ^_^
Đọc tiếp
bai 1 : tim cac so nguyen n sao cho cac phan so sau co gia tri nguyen:
a) \(\frac{n}{n-2}\)
bai 2 : tim tat ca cac phan so bang phan so \(\frac{8}{-12}\)mak tu so a cua phan so thoa man \(-4\le a< 17.\)
bai 3 : cho \(A=\) \(\frac{n+1}{n-1}\)\(.\)Voi gia tri nao cua n thi \(A\)la mot so chan ? Mot so nguyen am ?
GIUP MK NHA
MK DAG CAN GAP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
AI NHANH VA DUNG THI MK SE TICK CHO NHA ^_^
Ta da biet : trong he so ghi so thap phan ,cu muoi don vi o mot hang thi lam mot trong muoi gia tri :
So abcd trong he thap phan co gia tri bang :
a.10^3+b.10^2+c.10+d
Co mot he so cu hai don vi o mot hang thi lam thanh mot don vi o hang tren lien truoc do la he nhi phan moi chu trong he hai gia tri nhi phan chang han abcd ,mot trong hai gia tri 0va 1 mot so trong he thap phan chang han abcd duoc ki hieu abcd
Cho cac bieu thuc
A=n+6 phan n-5 va B=3n-9 phan n-6
a/ Tim gia tri nguyen cua n de A, B la phan so ?
b/ Tim gia tri nguyen cua n de A, B co gia tri nguyen?
c/ Tim gia tri nguyen cua n de A, B co gia tri nguyen lon nhat?