Question

3. Efectuați:
-(20+16):(63-59)=
-81: (3 x 3) x (54:9)=.
5x9-7x6=
72: 8x(48:8)= _
2-(54-7x6):(30:10+21:7)x (35 - 7x5)=_
(38 - 7 x 4)x(72:9+2)=
177,-64:(4:4)-64:(4:4)=
.45:(3 x 3) x 7-34=_​

Answer 1

Răspuns:

-(20+16):(63-59)= -36:4= - 9

-81:(3x3)x(54:9)= - 81:9x6= - 9x6= -54

5x9-7x6=45-42=3

72:8x(48:8)=72:8x6=9x6=54

2-(54-7x6):(30:10+21:7)x(35-7x5)=2-(54-42):(3+3)x(35-35)=2-12:9x0=2

(38-7x4)x(72:9+2)=(38-28)x(8+2)=10x10=100

177-64:(4:4)-64:(4:4)=177-64-64=49

45:(3x3)x7-34=45:9x7-34=5x7-34=35-34=1

Explicație pas cu pas: