tim tat ca cac so tu nhien n de phan so \(\frac{18n+3}{21n+7}\)co the rut gon duoc
Tim n thuoc Z de phan so sau rut gon duoc:
4n+5/5n+4
Nho ghi cach lam nua nhe
Cho phan so a/35
a, tim so nguyen to a de a/35 rut gon duoc
b, Tim cac so a biet phan so do la phan so toi gian nho nhat hon 1
tim stn n de phan so 18n+3/21n+7 rut gon duoc
Tim tat ca cac so tu nhien n > 0 de 4n + 5 / 5n + 4 co the rut gon duoc
Ai lam dung thi tick
Cho cac so nguyen duong a,b,c,x,y,z
1, Biet 1/a = 3/b + c = 5/c + a. Hay rut gon phan so A = a/2b - c
2. Biet a/b = 2b/cc = 4c/a. Hay rut gon phan so B = ab + bc + ca/a2 + b + c2
3. Biet x/a = y/b =z/c. Hay rut gon phan so C = x*y*z*(b+c)*(c+a)*(a+b)/a*b*c(y+z)*(z+x)*(x+y)
4. Biet ab/a + 2b = 2/5; bc/b + 2c = 3/4; ca/c +2a = 3/5. Hay rut gon phan so D = abc/ab+bc+ca
5. Biet 3/a -4b = 5c. Hay rut gon phan so E = 3bc + ab - 4ac/6bc - 8ac -ab
Giup minh nhe! Ai lam duoc va dung cho tick.
Thanks cac ban
Cho cac so nguyen duong a,b,c,x,y,z
1, Biet 1/a = 3/b + c = 5/c + a. Hay rut gon phan so A = a/2b - c
2. Biet a/b = 2b/cc = 4c/a. Hay rut gon phan so B = ab + bc + ca/a2 + b + c2
3. Biet x/a = y/b =z/c. Hay rut gon phan so C = x*y*z*(b+c)*(c+a)*(a+b)/a*b*c(y+z)*(z+x)*(x+y)
4. Biet ab/a + 2b = 2/5; bc/b + 2c = 3/4; ca/c +2a = 3/5. Hay rut gon phan so D = abc/ab+bc+ca
5. Biet 3/a -4b = 5c. Hay rut gon phan so E = 3bc + ab - 4ac/6bc - 8ac -ab
Giup minh nhe! Ai lam duoc va dung cho tick.
Thanks cac ban
tim n thuoc N de n+3/2n-2 nguyen
tim n thuoc N de A= 21n + 3 / 6n + 4 rut gon duoc