3.Calculează:
a) ( 8 x 9 + 26 x 5 ) x 3:6-41 -
b) ( 475 + 3 x 165 ): 2 - 484 =
c) ( 283 – 176:2)x 4- 763 =
d) ( 9 x 100 – 37 x 8) + 390 x 10 =
e) ( 975 : 5 + 126 000 : 100) -- 486:9 x 4 =
f)[( 9 x 8-2): 10 1: 7 + ( 27 : 3 + 15:5): 2 =
g) [( 56:7–3)x9-( 8 + 2 x 9-4):2 1: 2 =
h) [( 17 + 25 ) : 6 + 7 x ( 80 – 72)]: 9 x 3 =
4. Afla numarul necunoscut​