Question

(1 supra 2 x 5 supra 3 + 2,5 ): 1, (3) - 1 supra 2

Answer 1

(1/2·5/3+2,5):1,(3)-1/2=(5/6+2intr5/10):1intr3/9-1/2=(5/6+5/2):12/9-1/2=(5+15)/6·9/12-1/2=20/6·9/12-1/2=5/2-1/2=4/2=2