Question

pick up the pairs of the equivalent rational number is -2/5,7/8​

Answer 1

Answer:

(i) 2 + (3 + 4) = (2 + 3) + 4

This is the associative property under addition.

(ii) 2·8 = 8·2

This is the commutative property under multiplication.

(iii) 8· (6 + 5) = 8·6 + 8·5

This is the distributive property of multiplication over addition

Step-by-step explanation:

Answer 2

Answer:

-2/5*2/2= -4/10.

-2/5*3/3=-6/15.

-4/10 and -6/15 are equivalent fractions of -2/5.

7/8*2/2=14/16.

7/8*3/3=21/24.

14/16 and 21/24 are equivalent fractions of 7/8.

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