Question

9. Efectuează, ţinând cont de ordinea efectuării operaţiilor:
98 – (7 x 3 + 12)+5x3 =
56+ (54:9 x 2)-6x7=
4x (24:3-4) + (64:8:4+ 6) x 2 =
9x (1+49:7:7)-16:8 x (5-6:2)=

Answer 1

Răspuns:

a) 80

b) 26

c) 32

d) 14

Explicație pas cu pas:

a) 98-(7x3+12)+5x3

=98-(21+12)+15

=98-33+15

=65+15

=80

b) 56+(54:9x2)-6x7

=56+(6x2)-6x7

=56+12-42

=68-42

=26

c) 4x(24:3-4)+(64:8:4+6)x2

=4x(8-4)+(8:4+6)x2

=4x4+(2+6)x2

=16+8x2

=16+16

=32

d) 9x(1+49:7:7)-16:8x(5-6:2)

=9x(1+7:7)-2x(5-3)

=9x(1+1)-2x2

=9x2-4

=18-4

=14

Answer 2

98-(7x3+12)+5x3=
98-(21+12)+15=
98-33+15=
65+15=80

56+(54:9x2)-6x7=
56+(6x2)-42
56+12-42
68-42=26

4x(24:3-4)+(64:8:4+6)x2=
4x(8-4)+(8:4+6)x2=
4x4+(2+6)x2=
4x4+8x2=
16+16=32

9x(1+49:7:7)-16:8x(5-6:2)=
9x(1+7:7)-2x(5-3)=
9x(1+1)-2x2=
9x2-4=
18-4=14

Am intarziat la baschet deci sper macar sa imi vezi raspunsul :)