Реши выражения. 90-(40-24:3):46+3.5 (9.7+56:7)-(2・6-4)3+54:9 (9.4-6.5)4-42:7+(60 – 11): 7 7.7-4.5+4(44-37) +9 (11-9):3 8.4+27:98:6+55-21:7.4

Решение:

1. \( 90 - (40 - 24 : 3) : 4 + 6 + 3 \cdot 5 = 90 - (40 - 8) : 4 + 6 + 15 = 90 - 32 : 4 + 6 + 15 = 90 - 8 + 6 + 15 = 82 + 6 + 15 = 88 + 15 = 103 \)
2. \( (9 \cdot 7 + 56 : 7) - (2 \cdot 6 - 4) \cdot 3 + 54 : 9 = (63 + 8) - (12 - 4) \cdot 3 + 6 = 71 - 8 \cdot 3 + 6 = 71 - 24 + 6 = 47 + 6 = 53 \)
3. \( (9 \cdot 4 - 6 \cdot 5) \cdot 4 - 42 : 7 + (60 - 11) : 7 = (36 - 30) \cdot 4 - 6 + 49 : 7 = 6 \cdot 4 - 6 + 7 = 24 - 6 + 7 = 18 + 7 = 25 \)
4. \( 7 \cdot 7 - 4 \cdot 5 + 4 \cdot (44 - 37) + 9 \cdot (11 - 9) : 3 = 49 - 20 + 4 \cdot 7 + 9 \cdot 2 : 3 = 49 - 20 + 28 + 18 : 3 = 29 + 28 + 6 = 57 + 6 = 63 \)
5. \( 8 \cdot 4 + 27 : 9 \cdot 8 : 6 + 5 \cdot 5 - 21 : 7 \cdot 4 = 32 + 3 \cdot 8 : 6 + 25 - 3 \cdot 4 = 32 + 24 : 6 + 25 - 12 = 32 + 4 + 25 - 12 = 36 + 25 - 12 = 61 - 12 = 49 \)