A few days ago
Chelsea

# does anyone know how to do this?

I have math homework and I really don’t understand it so it would be great if someone could explain it to me please. thank you so much.

my HW says

Find the sum or diffrence

1) l -13 – 2 l

2) l-13 l – l 2 l

3)l -13 l + l -2 l

thanks agan to anyone who helps me with this!

I hope its not confusig as to what it says but I had to use l’s as absolute value signs

A few days ago
Anonymous

1) 15

2) 11

3) 15

ahh I miss algebra

1) I -13 -2 I

the -13 becomes positive and the minus becomes a plus

so it is 13 + 2

2) l -13 l – l 2 l

the -13 becomes positive 13

the 2 stays the same

so it is 13 -2

3)l -13 l + l -2 l

both the 13 and 2 change into their positive forms

so it becomes 13 + 12

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A few days ago
dpirsq2
Whether the sign inside the absolute value is positive or negative, outside the sign they are positive. In number 1. first do what in inside the sign to get your answer.

1) -13 -2 = -15 absolute value is 15

2) 13 -2 = 11

3) 13 + 2 = 15

Absolute value is a number’s distance from zero and there is no negative distance.

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A few days ago
How about if I give you a clue.

I-20I = 20

I20I = 20

I-20 + 1I = I-19I = 19

I-20I – I1I = 20 – 1 = 19

etc.

Does this help?

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