Các câu hỏi tương tự
Cho ham so y=y (x)=2x-0,3
Tinh f(1) f(-0;2)
Tim 2 so xy bietx/3=y/7va x+y=120 do
tim x, y, z
a) x/y=-6/9 va x-y=30
b)x/5=y/4, z/5=y/7 va 2*x+3*y-z=106
c)x/5=y/4=z/7 va x+2*y+z=40
tim x;y;z biet x/3=y/4;y/5=z/7 va x+y+z=98
x/3=y/4;y/5=z/7 va x+y+z=98
tim x;y;z
4 tháng 10 2021 lúc 20:40
TIM X , Y , Z BIET
a x/3 = y/4 = z/5 va x + y + z = 36
b x/3 = y/4 = z/7 va 2x + y - z = - 24
tim x,y,z khi
\(\frac{x}{7}=\frac{y}{3}va\)x-24=y
\(\frac{x}{5}=\frac{y}{7}=\frac{z}{2}\)va y-x=48
\(\frac{x}{2}=\frac{y}{3};\frac{y}{4}=\frac{z}{5}\)va x-y- z=28
\(\frac{x}{3}=\frac{y}{5}=\frac{z}{7}\)va 2x+3-z=-14
tim x,y biet
a/ x/y = 3/4 va -3x + 5y =33
b/ x2/y2 = y2/16 va x2 + y2 = 100
c/ x/4 = y/7 va x.y =112
1,tim ba so x,y,z.bt rang:
x/2=y/3,y/4=z/5(dau / la phan)
2,tim 2 so x,ybt:x:2=y:(-5) va x-y=7
nhanh thi tick
tim x,y,z biet:x/3=y/4,y/5=z/7 va 2x+3y-z=124