Question

calculeaza ps e cu paranteze

Answer 1

•255 x (65-50) - (80:4-273 x 0):2=

-20/2 + 255 x 15
3825 - 10
= 3815

•(750 : 3 - 376 : 2) + (145 x 12) =
1740 + (250 - 188)
1740 + 62
= 1802

•(63 : 7 + 10 x 2 - 14) x 5 : (14 x 2 - 27 : 9) x 13 + 89 =

(20 - 14 + 9) 5 / 14 x 2 - 27/9 x 13 + 89
15 (întregi) 5 / 14 x 2 - 27/9
195(întregi) 5 / 14 x 2 - 27/9 + 89
195 x 3 / 14 x 2 - 27/9 + 89
89 + 975 / 28 - 3
(20 - 14 + 9) 5 / 14 x 2 - 27/9 x 13 + 89
975 / 25 + 89
89 + 89
= 128

•[3 x 1000 - 5 x (5 + 10 x 2 - 8 x 10)] x 25 : 10 =

(3000 - 5(20 - 80 + 5)) 25/10
81875 / 10
(-5 x (-55) + 3000) 25/10
(275 + 3000) 25/10
3275 25/10
3275 x 25 / 10
81875 / 10
= 16375 / 2.