Question

calculeaza respectand regulile invatate (7x7+7:7)x7
(20:2+28)x2
(18x2+18):6
196-3x(86-45)
36x2x(12+47)
15+60:(39-29)
1000-(35+60x2)+40
999+(10:2x4)-501
50+(40+80x100)-50
ajutati-ma va rog

Answer 1

(49+1)×7=50×7=350
(20÷2+28)×2=(10+28)×2=38×2=76
(18×2+18)÷6=(36+18)÷6=54÷6=9
196-3×(86-45)=196-3×41=196-123=73
36×2×(12+47)=36×2×59=72×59=4248
15+60÷(39-29)=15+60÷10=15+6=21
1000-(35+60×2)+40=1000-(35+120)+40=155+40=195

999+(10÷2×4)-501=999+(5×4)-501=999+20-501=1019-501=518
50+(40+80×100)-50=50+(40+8000)-50=50+8040-50=8090-50=8040