Question

a 15+15impartit15ori(15+15ori15)
b 250+60impartit(50-2ori15)ori50
c 110impartit10ori(110-20ori4)+670
d(444impartit4+400-400impartit10)impartit3
ajutati ma dau coroana

Answer 1

a)
15 + 15 : 15 x ( 15 + 15 x 15 ) = 255
= 15 + 1 x ( 15 + 225) =
= 15 + 1 x 240 = 
= 15 + 240 =
= 255

b)
250 + 60 : ( 50 - 2 x 15) x 50 = 400
= 250 + 60 : ( 50 - 30 ) x 50 =
= 250 + 60 : 20 x 50 =
= 250 + 3 x 50 =
= 250 + 150 =
= 400

c)
110 : 10 x ( 110 - 20 x 4) + 670 =1 000
= 11 x ( 110 - 80 ) + 670 =
= 11 x 30 + 670 =
= 330 + 670 =
= 1 000

d) 
( 444 : 4 + 400 - 400 : 10 ) : 3 = 157
= ( 111 + 400 - 40) : 3 =
= ( 511 - 40) : 3 =
= 471 : 3 =
= 157