Stefanmariagabiask
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13 Efectuează, respectand regulile

C) 23+ (8 8 + 6 x 6): 10 x 2 =

(6 x 8:4 - 20: 5x3+ 6 x 7:1): (18:3:3+32:8) =

(8x7 + 7 x 7 + 6 x 7) - (24 : 3 + 80:8 +35: 7) =

(9 3:3 + 40:8): 2 + 899 =

(64: 8:2 + 3 x 10 : 6) (63: 7 - 24: 6) + 378 =

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Răspuns :

Andrei2007200749ask

Explicație pas cu pas:

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Vezi imaginea Andrei2007200749
Crintina72ask

Salutare!:)



23+(88+6•6):10•2=
23+(88+36):10•2=
23+124:10•2=
23+12,4•2=
23+24,8=
47,8


(6•8:4-20:5•3+6•7:1):(18:3:3+32:8)=
(48:4-4•3+42:1):(6:3+4)=
(12-12+42):(2+4)=
(0+42):6=
42:6=
7


(8•7+7•7+6•7)-(24:3+80:8+35:7)=
(56+49+42)-(8+10+5)=
(105+42)-(18+5)=
147-23=
124


(93:3+40:8):2+899=
(31+5):2+899=
36:2+899=
18+899=
917

(64:8:2+3•10:6)•(63:7-24:6)+378=
(8:2+30:6)•(9-4)+378=
(4+5)•5+378=
9•5+378=
45+378=
423

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