2 years ago

Sarah was thinking of a number. Sarah divides by 7, then adds 9 to get an answer of 3. What was the original number?

Mathematics

2 answers:

vivado [14]2 years ago

6 0

Answer:

-42

Step-by-step explanation:

Do it backwards

Start with 3

SUBTRACT 9 to get -6

MULTIPLY by 7 to get -42.

Check:

Start: -42

Divide by 7: -6

Add 9: 3

Ding Ding!

makkiz [27]2 years ago

5 0

Answer:

-42

Step-by-step explanation:

x/7 = y

y + 9 = 3

3 - 9 = y

y = -6

-6 * 7 = x

x = -42

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