Current location - Training Enrollment Network - Mathematics courses - In the second half semester of sixth grade mathematics, "Open Training" 6.8 binary linear equation P54, the fourth major problem, 16, 17, is a minor problem! Solve! Give 25 points for one question! Th
In the second half semester of sixth grade mathematics, "Open Training" 6.8 binary linear equation P54, the fourth major problem, 16, 17, is a minor problem! Solve! Give 25 points for one question! Th
In the second half semester of sixth grade mathematics, "Open Training" 6.8 binary linear equation P54, the fourth major problem, 16, 17, is a minor problem! Solve! Give 25 points for one question! The second question is 50 points. 16, assuming that an X segment is cut into 3cm and a Y segment is cut into 4cm.

3x+4y=47

X and y are integer solutions: when x= 1, y= 1 1.

When x=3 and y=8.

When x=9 and y=5.

When x= 13, y=2.

Therefore, there are four methods.

17, the method is the same as 16.

2 yuan banknotes and 5 yuan banknotes ***26-8= 18 (yuan)

According to the meaning of the question: 2x+5y= 18.

X and y are integer solutions: so there is and only if x=4 and y=2.

So the answer is: x=4 y=2.