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Mika is thinking of a number. She tells Jonas that adding 1 to the opposite of her number will result in the number 7. What is Mika’s number?
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Mika is thinking of a number. She tells Jonas that adding 1 to the opposite of her number will result in the number 7. What is Mika’s number?
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Jul 24, 2018
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Mika is thinking of a number. She tells Jonas that adding 1 to the opposite of her number will result in the number 7. What is Mika’s number?
Mathematics
middle-school
Zumzum
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6 the answer is 6. =+}
Grocker
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Jul 25, 2018
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Grocker
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n is the number
-n is the oposite of that number
1+(-n)=7
1-n=7
minus 1 from both sides
1-1-n=7-1
0-n=6
-n=6
times -1 both sides
n=-6
her number is -6
Anorak
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Jul 29, 2018
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