how do you do these 5?

Algebra
Tutor: None Selected Time limit: 1 Day

Jul 21st, 2015

Thank you for the opportunity to help you with your question!

1.  32 - 212 = - 180

2.  19 - ( -12) = 19 + 12 = 31

3.  - 201 - ( - 42) = - 201 + 42 = - 159

9. - 17 - 8 = - 25

10.  - 9 - ( - 6) = - 9 + 6 = - 3

11.  2.9 - 3.8 = - 0.9

if numbers have same sign add and sing of number 

if numbers have opposite sign subtract smaller from larger and sign of larger 

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jul 21st, 2015

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Jul 21st, 2015
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Jul 21st, 2015
Dec 7th, 2016
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