1. -4/9(-7/9)=

2. 8/15(-2/3)=

3. 9/10 divided (-6/5)=

4. -4/11 divided 2/7=

i don’t understand how to do them. can anyone explain how to get the answer?

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The great thing about this problem is they give you everything you need to solve it easily. so the expression is: 12h+30w12h+30wand so everywhere you have an “h” you place 66. and everywhere you have a “w” you place 33. then the expression will look like this: 12(66)+30(33)12(66)+30(33)from here you multiply and then add. getting the following of: $785,862hope this