I need help Why is 1 + (−5) equal to −4? Dont Understand

-4

Step-by-step explanation:

You are adding positive 1 to -5. If a friend borrows 5 dollars from you (That means you have -5 dollars) and gives you back 1 dollar (That means you get positive 1), he sill owes you 4 dollars. That means you end up having -4 dollars (because he owes you 4 dollars).

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127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.