3 years ago

Please answer number 15 and 17

Mathematics

1 answer:

il63 [147K]3 years ago

7 0

Answer:

15 ans rln 1 and 17 ans rln3

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Three times the sum of a number and 7 is equivalent to 57.

Zarrin [17]

Equivalent expressions are expressions that have the same values.

The expression is $3(x + 7) = 57$ and the number is 12

Represent the number with x.

So, the sum of a number (x) and 7 would be represented as: x + 7

Three times the sum would be represented as: 3(x + 7)

This expression is equivalent to 57.

So, we have:

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$x + 7 = 19$

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$x + 7 - 7 = 19 - 7$

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Hence, the number is 12

Read more about equivalent expressions at:

brainly.com/question/2972832

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Please answer number 15 and 17​

Please answer number 15 and 17