6. Вычисли. 3⋅9+43 9⋅8−32 (34−20):7 (21−15)⋅5 90−9⋅6 42+7⋅4 13−4⋅2 (13−4)⋅2

Ответ: 70; 40; 2; 30; 36; 70; 5; 18

• \[3 \cdot 9 + 43 = 27 + 43 = 70\]
• \[9 \cdot 8 - 32 = 72 - 32 = 40\]
• \[(34 - 20) : 7 = 14 : 7 = 2\]
• \[(21 - 15) \cdot 5 = 6 \cdot 5 = 30\]
• \[90 - 9 \cdot 6 = 90 - 54 = 36\]
• \[42 + 7 \cdot 4 = 42 + 28 = 70\]
• \[13 - 4 \cdot 2 = 13 - 8 = 5\]
• \[(13 - 4) \cdot 2 = 9 \cdot 2 = 18\]

Ответ: 70; 40; 2; 30; 36; 70; 5; 18