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Mathematics 12 Online
OpenStudy (anonymous):

Find the absolute value. |-7| - |4| =

OpenStudy (skullpatrol):

any ideas?

OpenStudy (anonymous):

No

OpenStudy (skullpatrol):

what does absolute value mean to you?

OpenStudy (anonymous):

The distance between 0 to the number

OpenStudy (okdutchman7):

The absolute value is the distance from 0 on the number line.

OpenStudy (okdutchman7):

Let's break this into parts.

OpenStudy (okdutchman7):

How far is -7 from 0?

OpenStudy (skullpatrol):

Good, can that ever be negative?

OpenStudy (anonymous):

No

OpenStudy (skullpatrol):

so | -7 | = ?

OpenStudy (okdutchman7):

How far is 4 from 0?

OpenStudy (anonymous):

7

OpenStudy (okdutchman7):

That's right.

OpenStudy (okdutchman7):

This leaves you with simple subtraction: 7-4=?

OpenStudy (skullpatrol):

replace | - 7 | with +7

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