Question

Afla factorul comun din:1. 75x117+17x9-26x65 2.13x17+13x23+70x40-70x27 3.16.x59-16x25-34x15 4.16+16x5+16x109-155x6 si 5 123x56++123x46-(102x158-102x135) ! Ajutati-ma va rog !! I-au nota la scoala pentru astea, va rog din suflet sa mi le rezolvati !

Answer 1

75×117+17×9-26×65=9*(75*13+17)-26*65= 9*992-1690=7238

2.13×17+13×23+70×40-70×27 =13*(17+23)+70*(40-27)=13*40+70*13=
=13*(40+70)=13*110=1430

3.16×59-16×25-34×15 =16*(59-25)-34*15=16*34-34*15=34*(16-15)=34

4.16+16x5+16x109-155x6 =16*(1+5+109)-155*6=16*115-155*6=910

5 123x56+123x46-(102x158-102x135)=123*(54+46)- 102*(158-135)=
=123*100-102*23=9954