Kath starts with a number. she adds 3 to her number then double the result. finally, she subtracts 7. if she ended with 9, what
number did she start with?
1 answer:
The answer is 5. Work backwards: first add 7 to 9, then divide by 2, then subtract 3.
9+7=16
16/2=8
8-3=5
Cross Check:
5+3=8
8*2=16
16-7=9
Final Answer: 5
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Step-by-step explanation:
