A problem of linear equation with one variable 3. (1) given the equation 2a-3 = 2B + 1, compare the sizes of a and B, and point out how large (small)? (2) Given the equation 1-2a = 5-2B, compare the sizes of a and B, and point out how large (small)?

A problem of linear equation with one variable 3. (1) given the equation 2a-3 = 2B + 1, compare the sizes of a and B, and point out how large (small)? (2) Given the equation 1-2a = 5-2B, compare the sizes of a and B, and point out how large (small)?

1. In order to further alleviate traffic congestion, a city decided to build a light rail from the city center to the airport. In order to complete the project three months ahead of schedule, the original work efficiency needs to be increased by 12%. How many months will it take to complete the project?
2. If a student does 5 math problems every hour, he can finish them in the scheduled time. When he finished 10 problems last night, the efficiency of each problem increased by 60%, so he not only finished 5 hours in advance, but also did 5 more problems. Question: how many problems did the student plan to do? How many hours to finish?

(1) Suppose the original plan takes a month to complete the project, 1 / ax (1 + 12%) = 1 / (A-3) 28 / (25a) = 1 (A-3) 28 (A-3) = 25a3a = 28x3a = 28 (2) suppose the original plan completes 5A questions in a hour, 5A + 5 = 10 + (a-5-10 / 5) X5 (1 + 60%) 5A = 5 + 8 (A-7) 3A = 51A = 17, that is, the original plan completes 85 questions in 17 hours

Solving the equation of one degree with one variable

1(1)a=-2 1(2)b=1 1(3)x=2 1(4)y=-12

Help me to solve this problem, with one yuan equation. Thank you. The solution is clear
The sum of the ages of father and son this year is 91. When the father's age is twice the son's age (a few years ago or a few years later), the son's age is one third of the father's age now. Q: how old is the son this year? Please help to make a one yuan equation and solve it by the way. Thank you!

If the age of the son is x, then the father's age is 91-x, and the age difference between the father and the son is 91-2x; then when the father's age is twice the son's age, that is, the father's age is 2x, the son's age should be 2x - (91-2x) = 4x-91