(y + 1) + (y + 2) + (y + 3) + ... + (y + 100) = 5150
=> (y + y + y + ... + y) + (1 + 2 + 3 + ... + 100) = 5150
=> 100y + 5050 = 5150
=> 100y = 100
=> y = 1
y x 1/2 + y x 3/2=100
Y+Y*2+Y*3+.....+Y*99+Y*100=50500
Tim y:
3 y\(\times\)(y+2)=2\(\times\)(y+100)
75/100 x y 3/4 x y y= 30
1. Tìm số tự nhiên n, thỏa mãn : \(\frac{95}{13}\times\frac{105}{31}>n>\frac{100}{31}:\frac{50}{217}.\)
2. Tìm y:
\(y+y:\frac{2}{7}+y\times\frac{3}{5}=102\)
Tìm Y:
Y x 16/64 + Y x 25/100 + Y x 1/4 + Y x 15/60 - 13/15 = 17/15
1.Tìm y, biết: a) y × 2/5 + y × 3/5 = 5/7 b) y × 7/2 - y × 3/2 = 3/4
y + 1/3 = 7/15 : 1/2 là :
A) y = 3/5 , B) y = 5/3 , C) y = 1/3 , D) y = 1/5
giúp mik nhé !
Tìm y
a) y x 6/7 = 5/14
b) y : 2/3 = 4/9
c) 3/10 + y = 1/2
d) 5/6 - y = 1/3
