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Application of Binary Linear Equation (1) in Volume 4.4 of Seventh Grade Mathematics of Zhejiang Education Press.
1.B

2.C

3. 125

4. Answer: 1 10 meter per minute.

B: No score for b:90 meters.

5.M=8

Exceed standard 4

6.32 liters, 2 1 pick

7. Length 45, width 15

8. A piece of 50,70

B 100， 140

9.( 1) Schoolbag 92

Walkman 360 yuan

(2) Answer

10.( 1)960、360

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