Current location - Training Enrollment Network - Mathematics courses - How to solve the second question of 45 in the first volume of the third grade synchronous exercise book of mathematics in Hebei Education Press?
How to solve the second question of 45 in the first volume of the third grade synchronous exercise book of mathematics in Hebei Education Press?
x y z 2x+3y+4z & gt； = 103x+4y+ 10z & lt； =7.5
2 2 0 10 14
0 2 1 10 18
3 0 1 10 19
1 0 2 10 23
Choose 4 tons for twice, 6 tons for twice, and 8 tons for zero.