Question

calculati:a){3intregisi1supra4+1intreg si2supra7-1intreg si 17supra28}}x1intreg si15supra41; b)270supra63x{3intregisi 1supra5+7intregi si1supra15-2intregi si1supra3

Answer 1

a. 3intregisi1supra4+1intreg si2supra7-1intreg si 17supra28 inseamna 13/4+9/7-45/28=(91+36-45)/28=82/28=41/14.

1intreg si15supra41 inseamna 56/41

41/14 inmultit cu 56/41 este 4

b. 3intregisi 1supra5+7intregi si1supra15-2intregi si1supra3 inseamna 16/5+105/15-7/3 aducem la acelasi numitor comun adica 15 si avem (48+106-35)/15=119/15

270/63 * 119/15 =118*18/63