Soru:
İŞLEM YETENEĞİ (A) 15. [3.(4-3.(1-3)].(-2) - 3 16. 9+7.(3-4.3)-4.(1-3) 17. 3-4.[1-4. (3.4 -2.5)] 18. 5.7-3.[7- (3.4 +2.3) - 7] 1
İŞLEM YETENEĞİ (A) 15. [3.(4-3.(1-3)].(-2) - 3 16. 9+7.(3-4.3)-4.(1-3) 17. 3-4.[1-4. (3.4 -2.5)] 18. 5.7-3.[7- (3.4 +2.3) - 7] 19. (4.3-5.6-7.7).(1-3) -1-7 20. (15: (-3) -14.8 +21.6) (210:35) 21. (141: (-3)) - (140: 1-70) + (14.13)