Question

lesson - rational numbers

pls help me slove tat sums and explain how and how all came and why

Q. find the product of the following:​

Answer 1

Answer:

a.) $-\frac{8}{25}$ OR (DECIMAL: -0.32)

b.) 1/2 OR (DECIMAL: 0.5)

Step-by-step explanation:

a. = 4/5 x -15/21 x 14/25

Simplify:

= 4/5 x -5/7 x 14/25

Apply rule a(-b) = -ab:

= - 4/5 x 5/7 x 14/25

Cross-cancel common factor: 5

- 4/7 x 14/25

= - 4 x 14/7 x 25

Factor the number: 14 = 7 x 2

= - 4 x 7 x 2/7 x 25

Cancel common factor: 7

= - 4 x 2/25

Multiply numbers: -4 x 2 = -8

= - 8 /25

b. = -5/7 x -8/15 x 21/16

Apply the fraction rule: -a/b = - a/b

= - 5/7 (- 8/15) 21/16

Apply rule -a(-b) = ab

5/7 x 8/15 x 21/16

5 x 8 x 21/7 x 15 x 16

Factor the number 15 = 5 x 3

= 5 x 8 x 21/7 x 5 x 3 x 16

Cancel common factor: 5

= 8 x 21/7 x 3 x 16

Repeat process, then the resulting number will be 1/2

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PLS. MARK ME AS THE BRAINLIEST. HOPE THIS HELPS.