Current location - Training Enrollment Network - Mathematics courses - On page 66 of the first volume of fifth grade mathematics, exercise 12, questions 2 and 3 are done with equations.
On page 66 of the first volume of fifth grade mathematics, exercise 12, questions 2 and 3 are done with equations.
2. An X-ray tube is installed in the solution.
5x+3= 1428
5x+3-3= 1428-3
5 x= 1425
5x \5 = 1425 \5
x=285
3. Solution: Let Tiananmen Square cover an area of X million square meters.