Solution: Let the divisor be x, then the dividend is 9x and the equation is
9x+x+9=279
X = 27 and 9x = 243 to solve the equation.
The answer divisor is 27, and the dividend is 243.
2. Make a rectangle with a line that sings 3.6 decimeters. Double the length. What is the length and width of this rectangle?
Solution: If the width is x decimeter and the length is 2x decimeter, the equation is obtained.
2(x+2x)=3.6
6x=3.6
x=0.6
It should be 0.6 decimeter wide and 1.2 decimeter long.
3. There are RMB 65,438+0 yuan, 2 yuan, 5 yuan and RMB 65,438+00, RMB1* * 65,438+0080, and the number of each kind of paper money is equal and less.
Solution: suppose there are x sheets of paper, then
x+2x+5x+ 10x= 1080
18x= 1080
The solution is x=60.
A: There are 60 notes of each kind.