Question

Calculati:
/ = supra
(7/8+9/8) x 5 - 2²=

3 x (1/3 + 1/4 + 1/12) -1=

5-(1/2 + 1/15+ 1/30) x 5=

(4/5-2/3) x (2-1/2)=

(1/6+17/8):33/8+4/9=

VA IMPLOR ESTE URGENT OFER CORONITA SI PUNCTE

Answer 1

(7/8+9/8)*5 - 2²=
= 2*5-4 =10-4 =6

3*(1/3 + 1/4 + 1/12)-1=
= 3*2/3-1=2-1=1

5-(1/2 + 1/15+ 1/30)*5=
=5-3/5*5=5-3=2

(4/5-2/3)*(2-1/2)=
=2/15*3/2=1/5

(1/6+17/8):33/8+4/9=
=55/24*8/33+4/9=
=5/3*1/3+4/9=
=5/9+4/9=
=(5+4)/9=
=9/9=1

Answer 2

7+9/8 =16/8(simplifici cu 4 si iti da 4/2)
4/2×5-4=24/2-4(amplifici pe 4 cu 2)
24/2-8/2=16/2=8

3×(1/3+1/4+1/12)-1=3×(4/12+3/12+1/12)-1=3×8/12-1=
=(se simplifica 3 cu 12)=8/4-1=2-1=1


5-(1/2 + 1/15+ 1/30) x 5=5-(15/30+2/30+1/30)×5=
=5-18/30×5=(se simplifica 5 cu 30)=5-18/6=(amplificam 5 cu 6)=30/6-18/6=12/6=6

(4/5-2/3) x (2-1/2)=(amplificam4/5cu3 si 2/3 cu 5)si pe 2 cu 2=(12/15-10/15)×(4/2-1/2)=2/15×3/2(se simplifica 2 de sus cu 2 de jos si 3 cu 15)=1/5×1\1=1/5


(1/6+17/8):33/8+4/9=1/6÷33/8+17/8÷33/8+4/9=1/6×8/33+17/8×8/33+4/9=(se simplifica 6 cu 8 prin 2) si (8cu 8)=1/3×4/33+17/33+4/9=4/99+17/33+4/9=(amplificam 17/33 cu 3 si pe 4/9 cu 11) =4/99+51/99+44/99=99/99=1

Sper ca te-am ajutat