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I need help with these two problems 4-155 and 4-156
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I need help with these two problems 4-155 and 4-156

I need help with these two problems 4-155 and 4-156-example-1
User Mwlebour
by
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1 Answer

4 votes

a)


(12)/(5)+(7)/(10)=(24)/(10)+(7)/(10)=(31)/(10)

b)


(9)/(4)+(-(1)/(3))=(9)/(4)-(1)/(3)=(27-4)/(12)=(23)/(12)

c)


-(3)/(5)+(-(1)/(6))=-(3)/(5)-(1)/(6)=(-18-5)/(30)=-(23)/(30)

User Modig
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