Question

21 -3
7
6. Multiply the sum of 2/3 and -4/7 by the sum of 5/7 and -3/4
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Answer 1

Answer:

multiply

sum of 2/3 and -4/7 by

the sum of 5/7 and -3/4

so

2/3 +-4/7

2/3-4/7

14-12/21

2/21

now

5/7+-3/4

5/7-3/4

20-21/28

-1/28

now we have to multiply these sums

ie; 2/21×-1/28

-2/588

Answer 2

Answer:

-2/588

Step-by-step explanation:

sum= 5/7+(-3/4)

= 20/28 + (-21/28)

= 20/28 - 21/28

= -1/28

sum = 2/3 + (-4/7)

= 14/21 + (-12/21)

= 14/21 - 12/21

= 2/21

multiplication = -1/21 × 2/28

= -2/588