Find values of expression: a) 16.5-a at a=8.7 b) m+2n at m=1 whole 1/3, n=5/6 2) Write down the answer to a task question in the form of alphabetic expression: a) The kilogram of potatoes costs an of rub and the kilogram of onions costs rub b. How much are 3 kg of potatoes and 2 kg of onions? b) Mischa in a collection had an of brands. He gave to the friend of b of brands, and bought from brands. How many brands became at Mischa?

15
A) 16.5 - and at and =8.7 16.5-8.7=7.8 b) m+2n at m=1 1/3 n=5/6 1 1/3+2*5/6=4/3+10/6=18/6=3 2. a) 1 kg of potatoes - and rub of 1 kg of onions - b of rub of 3 kg of potatoes and 2 kg of onions - 3*a+2*b b) was - and brands gave - b of brands bought - from brands became - a-b+c
231
Answer add