View：how to create the equations
A duck travels from point A to point B. If the duck flies 3/4 of the way, walks 1/9 of the way and swims the remaining 10 kilometers of her trip, what is the total distance in kilometers traveled by the duck?
A.45 B.56 C.72 D.108
solving the systems of the linear equations
eg: 4x+2y=18 and x+y=5,what is the value of x,y and 10x+6y?
1.If x and y are real numbers such that 3x+4y=10 and 2x-4y=5,then what is the value of x?
2.If 12a-3b=131 and 5a-10b=61,then what is the value of a+b?
3. If 4n-8m=6,and -5n+4m=3,then n=?
Some more exercise
If ab=3, bc=5/9, ac=15,what is one possible value of abc?
A.5 B.8.33 C.18.54 D.25
1.If ab=1/8, bc=6, ac=3, what is one possible value of abc?
A.3.75 B.2.25 C.1.5 D.0.25
2. If xyz=4, and y z=5,what is the value of x/y?