231144:8-(346×47-3110) решите с действиями​

1. 346х47-3110=13152

2. 231144:8=28893

3.28893-13152=15741

1. 346*47= 16262

2. 16262-3110= 13152

3. 231144:8=28893

4.28893-13152=15741

a)esli 3/8 iz 32 knig slovari to slovarei 3/8*32=12

b)esli avtobus proexal 2/5 iz 200 km to on proehal 2/5*200=80 km