Question

Calculati: a)1997*315+1997*475+1997*1210= b)34*15 345+34*75 655-34*41 000= c)13 577*21 345-13 577*9 350-13 577*11 995= d)1995+1995*1996-1997*1994= e la Factor comun exercitiul * inseamna ori Va rog ajutatima! am nevoie rapid

Answer 1

a) 1997x315+1997x475+1997x1210=
    1997x(315+475+1210)=
     1997x2000=3.994.000
b) 34x15345+34x75655-34x41000=
    34x(15345+75655-41000)=
    34x50000=1.700.000
c) 13577x21345-13577x9350-13577x11995=
    13577x(21345-9350-11995)=
    13577x0=0
d) 1995+1995x1996-1997x1994=
    1995+3.982.020-3.982.018=
    3.984.015-3.982.018=1997

Answer 2

1997(315+475+1210)=1997*2000=3994000
34*(15345+75655-41000)=34*5*10000=1700000
13577*(21345-9350-11995)=13577(0)=0
1995*(1+1996-1994)=1995*3=5985