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Quickly test the seventh grade math answer before and after class 5.3. Application of one-dimensional linear equation.
(1) After class, cab CAC, BC, ABA, Cabb, DBBB, Question 9 X=50 10, The train speed is 25m/s and the length is 500m.

(2) After 2)2)BBCAC CCCAB, the ninth question X of CDCBCBBC is approximately equal to 18, and the tenth question X=0.5.

(3) Before class: BBCABBCABB After class: BABCBCDA Question 9: x=300 Question 10: x=5000.

I made it myself, among which (1)(2) What the teacher said is absolutely right! ! !

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