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MrRissso [65]
3 years ago
13

What is the largest multiple of 9 which is smaller than -70?

Mathematics
2 answers:
sergey [27]3 years ago
6 0

Answer: The number is -72

Step-by-step explanation:

We want the largest multiple of 9 (this is a number equal to 9*r, where r is a real number) that is smaller than -70

So we want the first multiple of 9 that is smaller than -70.

We have that 9*8 = 72

so we will also have that 9*-8 = -72

now, -72 is smaller than - 70

-72 is a multiple of 9.

-72 is the first multiple of 9 smaller than -70 (the next is 9¨-9 = -81 ) so we have that -72 is the largest multiple of 9 that is also smaller than -70.

zysi [14]3 years ago
5 0

Answer:

Step-by-step explanation:

Let's say the number "n" were the largest multiple of 9. But then:  

Consider n + 9. n is itself a multiple of 9, so n = 9k, so n + 9 = 9(k + 1), so n + 9 is also a multiple of 9, and n + 9 is larger than n.  

So there can't be a largest multiple of 9 (or any number).

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