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Mathematics 7 Online
OpenStudy (anonymous):

Arnold went shopping at the Link with $80 to spend. He spent $12 on a belt and $20 for a shirt. How much can he spend on a pair of pants? x < 68 x < 58 x < 48 x < 38 is it the third choice?

OpenStudy (anonymous):

Yes! You're right!

OpenStudy (anonymous):

Because x < (80 - 12) - 20 -> x < 48

OpenStudy (anonymous):

yay! =D

OpenStudy (anonymous):

Notice that the grouping of parentheses is important because x < 80 - (12 - 20) does NOT lead to x < 48. You could also leave the parentheses out and go in order on the subtraction.

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