Seventh grade mathematics volume I p38 exercise 1.4, 4, 6,
Question 4 (1) negative 7, (2) 4 (3) negative 3 points 16 (4) 3 (5) negative 5 points 4 (6) negative 3 points 2 question 6 (1) negative 3 (2) negative 12 points 1 (3) 4 points 27 (4) 20 question 7 (1) 24 (2) negative 210 (3) 25 points 8 (4) negative 100 (5) 0 (6) negative 11 points 1
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