Why does 31- -20 equals 51?

Anonymous

∙ 15y ago

Updated: 8/19/2019

Because subtracting a negative number is the same as adding a positive number.

Subtracting -20 is the same as adding +20.

31 - (-20) = 31 + 20 = 51

Wiki User

∙ 15y ago

What else can I help you with?

What are the two numbers whose sum is 51 and whose difference is 11?

31 and 20

How many times does 20 go into 51?

2.55 times.

What number is spetember if January equals 73 February equals 83 March equals 51 April equals 52 May equals 31 June equals 42 July equals 41 August equals 63 September equals?

Are 31 and 51 prime numbers?

31 is prime, but 51 is not as 51=3*17.

What is the LCM of 31 and 51?

The LCM of 31 and 51 is 1,581.

Answers to magic square equals 51 with the numbers 13 14 15 16 17 18 19 20 21?

What number is spetember if January equals 73 february equals 83 march equals 51 April equals 52 may equals 31 June equals 42 July equals 41 august equals 63 September equals and what is logic?

What is 31 over 51 reduced?

31/51 is in its simplest form.

What is the rule for the number pattern 1 6 16 31?

The rule is 5, 10, 15 and so the next number will be 20+31 = 51

What is 20 percent of 51?

20% of 51= 20% * 51= 0.2 * 51= 10.2

What number can be divided by 5 and 4 with a remainder of 1 and 3?

11, 31, 51 and more at intervals of 20

What is 51 percent in fractions 51 percent equals?

51% = 51/100

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