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МатематикаВопрос:
7. Найдите значения выражений, используя распределительное свойство умножения. a) 78 ⋅ 35 + 22 ⋅ 35 = (78 + 22) ⋅ 35 =
Ответ:
a) 78 ⋅ 35 + 22 ⋅ 35 = (78 + 22) ⋅ 35 = 100 ⋅ 35 = 3500
Ответ: 3500
Похожие
- б) 8 ⋅ 7 + 8 ⋅ 4 =
- в) 42 ⋅ 42 - 32 ⋅ 42 + 10 ⋅ 42 =
- г) 19 ⋅ 17 + 11 ⋅ 17 =
- д) 7 ⋅ 379 - 6 ⋅ 379 =
- e) 19 ⋅ 65 + 12 ⋅ 65 - 31 ⋅ 65 =
- ж) 16 ⋅ 83 + 19 ⋅ 83 - 32 ⋅ 83 =
- з) 927 ⋅ 18 - 927 ⋅ 17 =
- и) 36 ⋅ 52 + 54 ⋅ 52 =
- 8. Упростите выражения. a) 13x + 16x = (13 + 16)x =
- б) 3b + 8b =
- в) a + a + a =
- г) 48p - 27p =
- д) 20x + x =
- e) 13a + 5a − a =
- 9. Решите уравнения. a) 8x + 8x = 320 16x = x = x =
- б) 10a − a = 810 9_____ = 810 a = a =
- в) 5t + 4t + t = 720 t = 720 =
- г) 15b + 6b − b = 400 _____b = 400
