4 and 3 / 4 minus 25 minus 1 / 4 =? Please mark the final answer. If it is correct, you can get extra points

4 and 3 / 4 minus 25 minus 1 / 4 =? Please mark the final answer. If it is correct, you can get extra points

-20 and 1 / 2

4 and 2 / 3 times 1.5 minus 7 / 25 divided by 0.24

14 / 3 x 2 / 3-7 / 25 divided by 7 / 25
=7-7 / 6
=Six and one in six

"Equation" is a very important mathematical model in real life. Please write an application problem of binary linear equations in combination with your actual life, and make the binary linear equations listed as x = 2yx + y = 60, and write the solving process

There are 60 trees in my family, of which poplar is twice as much as willow. How many trees are there for poplar and willow? According to the meaning of the question: x + y = 60 ① x = 2Y ② solution: x = 40y = 20 answer: my family has 40 poplar trees and 20 willows