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-1+2=1 If you have a negative number and a positive number subtract them. If the negative number is higher than the other number then it is negative. To change the expression but keep the answer the same you can do 2-1=1. Take out the addition sign and switch the numbers.

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βˆ™ 16y ago
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βˆ™ 11y ago

1 plus negative 2 is -1, because adding negative numbers makes a number lower. And vice versa, meaning that subtracting a negative number adds to the value.

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βˆ™ 11y ago

1+-1= 0. 0+1=1 1+2=3

ps 3+4=7 7+8=15

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βˆ™ 7y ago

-2 + -1 = -3
negative 3

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βˆ™ 14y ago

-2 + -1 = -3

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Wiki User

βˆ™ 15y ago

One.

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Wiki User

βˆ™ 7y ago

negative 1

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Anonymous

Lvl 1
βˆ™ 4y ago

3

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Q: What is 1 plus negative 2?
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