1.
Let the minuend be X and the minuend be Y. According to the meaning of the question, the following equations can be listed.
x-y= 1.5
(phase difference 1.5.
That is, the minuend x minus the minuend y)
x
y
1.5=4. 12 (the subtraction number y of the minuend x plus the difference 1.5 equals 4. 12).
By solving this system of equations, we can get
x=2.06
y=0.56
So the minuend is 2.06.
Reduced by 0.56.
2.
Let the dividend be X and the divisor be Y. According to the meaning of the question, the following equations can be listed.
0.5xy=8 1/ 100
(quotient 0.5 times dividend x)
Multiply by divisor y
Equal to 81100)
x/y=0.5
(Divided by divisor y equals quotient 0.5)
By solving this system of equations, we can get x=9/ 10.
y=9/5
That is, dividend is 9/ 10.
The divisor is 9/5
3.
1/2= 1/4
1/4
1/3= 1/6
1/6
1/x= 1/2x
1/2x