Для начала переведем вес теленка в граммы :15 кг 300 г = 15300 гВ июне и сентябре 30 дней, узнаем, на сколько увеличилась масса теленка за июнь и за сентябрь :1050 * 30 = 31500 гВ июле и августе 31 день, узнаем, на сколько увеличится масса теленка за июль и август :1050 * 31 = 32550 гА теперь мы сможем посчитать массу теленка по истечении каждого перечисленного месяца :1) 15300 + 31500 = 46800 г = 46 кг 800 г - масса теленка 1 июля2) 46800 + 32550 = 79350 г = 79 кг 350 г - масса теленка 1 августа3) 79350 + 32550 = 111900 г = 111 кг 900 г - масса теленка 1 сентября
After my hard and busy school year my summer holidays began. I felt happy and began to plan a lot of wonderful things to do during my summer vacation.
I was dreaming about far South countries I always wanted to visit but I had to go to the Azove seaside with my relatives. The water was very warm there because you know Azove Sea isn’t deep. What I liked there - a lot of different kinds of entertainment there: "water mountains", water scooters and discos.
There was nothing to do all day except lying in the sun and getting a wonderful tan. I was playing with my little sister on the sand and in the waves teaching her to swim. Later I returned to Kherson and spent some time in town going out with my friends, reading, listening to music, watching TV, playing computer games. After that I went to the sports camp where I spent seven days.
It was very useful experience because I had to get up very early, to train a lot, and to rest very little. But it made me stronger and healthier.
I was very happy to return home and I spent several days in my summer cottage, I helped my grandpa to dig the garden, to water plants, and to gather fruit and vegetables. I was fishing with my grandpa and we were cooking fish together. Only insects were spoiling my good mood. I enjoyed floating by boat, swimming in the river and helping my grandparents.
During my summer holidays I made many new friends, read a lot of interesting books, got to know a lot of useful things. Now I feel ready to get back to school.
1) (3m + 2) · 6 + (3m + 2) · 9=45m+30
2) (4m + 5) · 2 + 5 · (m – 2)=13m