Question

1 1/4*12+(8 3/20-6 1/20):7

Answer 1

1) 8 3/20-6 1/20= 163/20-121/20=42/20= 21/10=2 1/10
2)2 1/10:7=21/10:7/1=21/10•10/7=3
3)11/4•12=11/4•12/1=33
4)33+3=36

Answer 2

Let's break down the expression step by step:

1. First, calculate the product of 1 1/4 and 12: 1 1/4 * 12 = (5/4) * 12 = 15

2. Next, calculate the difference between 8 3/20 and 6 1/20: 8 3/20 - 6 1/20 = (163/20) - (121/20) = (163 - 121) / 20 = 42/20 = 21/10 = 2.1

3. Finally, divide the result from step 2 by 7: 2.1 / 7 = 0.3

So, the final result is 0.3.