Question

Solve using properties

a)-75x8 (commutative property of multiplication)

b)3x(5+7) (Distributive property)

c)-4+ (5+3) (Associative property of addition)​

Answer 1

• -75 × 8 = 8 × (-75)

= -600 = -600

• 3 × (5+7)

= 3+5 × 3+7

= 8 + 10

= 18

• -4 + ( 5 + 3 )

= -4 + 8

= 4

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Answer 2

Answer:

a) -75 × 8 = -600

b) 3(5 + 7) = 36

c) -4+(5+3) = 4

Step-by-step explanation:

a) -75 × 8

By Commutative property

a × b = b × a

-75 × 8 = 8 × -75

-600 = -600

L.H.S = R.H.S

b) 3(5 + 7)

By Distributive property

a(b+c) = (a × b) + (a × c)

3(5 + 7) = (3 × 5) + (3 × 7)

3 × 12 = 15 + 21

36 = 36

L.H.S = R.H.S

c) -4+(5+3)

By Associative property

a+(b+c) = (a+b)+c

-4+(5+3) = (-4+5)+3

-4+8 = 1+3

4 = 4

L.H.S = R.HS.

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