Explanation: For solving this question, we use the distributive property. It states that for any three numbers a, b and c, [tex]a * b + a * c = a * (b+ c)[/tex] Therefore, in this question, (-21) x (-17) + (-21) x (-3) = (-21) x [(-17) + (-3)] = (-21) x [-17 – 3] = (-21)(-20) = 420 Simpler explanation: An example can be taken of three numbers, say -1, -2, -3. (-1) x (-2) + (-1) x (-3) = 2 + 3 = 5 This can also be written as (-1) x (-2) + (-1) x (-3) = (-1) x (-2 – 3) = (-1) x (-5) = 5 This is Distributive Property. Hence, (-21) x (-17) + (-21) x (-3) = (-21) x [(-17) + (-3)] = (-21) x [-17 – 3] = (-21)(-20) = 420 Answer: 420 If this helps, it’d be great if you mark this answer as Brainliest. 🙂 Reply
Explanation:
For solving this question, we use the distributive property.
It states that for any three numbers a, b and c,
[tex]a * b + a * c = a * (b+ c)[/tex]
Therefore, in this question,
(-21) x (-17) + (-21) x (-3)
= (-21) x [(-17) + (-3)]
= (-21) x [-17 – 3]
= (-21)(-20)
= 420
Simpler explanation:
An example can be taken of three numbers, say -1, -2, -3.
(-1) x (-2) + (-1) x (-3)
= 2 + 3
= 5
This can also be written as
(-1) x (-2) + (-1) x (-3)
= (-1) x (-2 – 3)
= (-1) x (-5)
= 5
This is Distributive Property.
Hence,
(-21) x (-17) + (-21) x (-3)
= (-21) x [(-17) + (-3)]
= (-21) x [-17 – 3]
= (-21)(-20)
= 420
Answer: 420
If this helps, it’d be great if you mark this answer as Brainliest. 🙂