Question

Aplique a propriedade distributiva:
A)4.(5+7)=
B)-5.(-3+6-10)=
C)(-10+30):5=
D)( 3/5+ 1/3 ): 3/4=

Answer 1

4 * (5 + 7)                  4 + 12 = 48
20 + 28
48


-5 *(- 3 + 6 - 10)          -5 * -7 = + 35
15 - 30 + 50
+ 35


(-10 + 30) / 5                20 / 5 = 4

(-10 / 5) + (30 / 5)
-2 + 6
4



(3/5 + 1/3) ÷ 3/4   
(3/5 ÷ 3/4) + (1/3 ÷ 3/4)    
(12/ 15)  + (4 /9)
 
 mmc
15 ; 9 | 3
 5  ; 3 | 3
 5  ; 1 | 5
 1  ; 1 | mmc = 45


(36 + 20) / 45
56 / 45 


espero ter ajudado

Answer 2

a) 4.(5+7) =20+28 =48∴ b)-5(-3+6-10)=+15-30+50∴ 65-35=30∴ c) (-10+30):5 =-2+6=4∴ d) (3/5+1/3):3/4∴ (3/5+1/3).4/3 = 12/15+ 4/9 ∴ 108+60/135=168/135=56/45