Предмет: Математика, автор: loislili

Пожалуйста, помогите! Упростите выражение и вычислите его значение: 1.67b-38b, если b=27 2. 38d+14d-6d+36, если d=172 3. 36+82а-17а+15а+13, если а=2016

Ответы

Автор ответа: druma4ek2015
0
1)1,67*27-38*27=45,09-1026=-980,91;
2)38*172+14*172-6*172+36=6536+2408-1032+36=8980-1032=7948;
3)36+82*2016-17*2016+15*2016+13=36+165312-34272+30240+13=
=195601-34272=161329.
Автор ответа: 20021106
0
1) 67b-38b:        2) 38d+14d+6d+36:
     29b                    14d+6d=20d
                                38d+20d=58d
                                58d-36=22
                                  
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