Question

No entiendo ayuda por favor.Resolver.
-5/6-4/3+5/6 =
-5/9+2/6- 7/2+2/3 =
-5/4+7/6-11/8+15/12 =
-3/5-+7/6-5/2+11/2 =
¾-7/9+5/6-2/3 =
-8/3+5/4-7/6+5/12 =
-3/7·4/3 =
5/6·-4/3 =
-4/5·15/2 =
-9/5·2/3·1/4 =
-7/6·-6/9·-11/10 =
-4/5·-7/8-·-9/12 =
ll) -3/5: -2/7 =
m) 7/6:-4/3 =
n)-3/5: -2/4 =

Answer 1

Para suma o resta de fracciones se halla el mcm de los denominadores.

• -4/6 - 4/3 + 5/6
= (-4 - 2(4) + 5)/6
= (-4 - 8 +5)/6
= -7/6

• -5/9 + 2/6 -7/2 +2/3
= (-5(2) + 2(3) - 7(9) + 2(6))/18
= (-10 + 6 - 63 + 12)/18
= -55/18

• -5/4 +7/6 - 11/8 + 15/12
= (-5(6) + 7(4) - 11(3) + 15(2))/24
= (-30 + 28 - 33 + 30)/24
= -5/24

• -3/5 - (+7/6) - 5/2 + 11/2
= -3/5 - 7/6 - 5/2 + 11/2
= (-3(6) - 7(5) - 5(15) + 11(15))/30
= (-18 - 35 - 75 + 165)/30
= 37/30

• 3/4 - 7/9 + 5/6 - 2/3
= (3(9) - 7(4) + 5(6) - 2(12))/36
= (27 - 28 + 30 - 24)36
= 5/36

• -8/3 + 5/4 - 7/6 + 5/12
= (-8(4) + 5(3) - 7(2) + 5(1))/12
= (-32 + 15 - 14 + 5)/12
= -26/12 = -13/6

• -3/7 × 4/3
= (-3 × 4)/(7×3) ; simplificamos
= -4/7

• 5/6 × -4/3
= (5 × -4)/(6×3) ; simplifucamos
= -20/18 = -10/9

• -4/5 × 15/2
= (-4 × 15)/(5 × 2) ; simplificamos
= (-2 × 3) / (1 × 1) = -6

• -9/5 × 2/3 × 1/4
= (-9 × 2 × 1)/(5 × 3 × 4)
= (-3 × 1 × 1)/(5 × 1 × 2) = -3/10

• -7/6 × -6/9 × -11/10
= (-7 × -6 × -11)/(6 × 9 × 10)
= (- 7 × -1 × -11)/(1 × 9 × 10) = -77/90

• -4/5 × -7/8 × -9/12
= (-4 × -7 × -9)/(5 × 8 × 12)
= (-1 × -7 × -3)/(5 × 2 × 4) = -21/40

• -3/5 ÷ -2/7 ; la división se convierte en multiplicación de la inversa
= -3/5 × -7/2
= (-3 × -7)/(5 × 2) = 21/10

• 7/6 ÷ -4/3
= 7/6 × -3/4
= (7 × -3)/(6 × 4) = (7 × -1)/(2 × 4) = -7/8

• -3/5 ÷ -2/4
= -3/5 × -4/2
= -3/5 × -2/1
= (-3 × -2)/(5 × 1) = 6/5

Answer 2

Respuesta:

Explicación paso a paso: