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(1):
2a/(5a^2b)+3b/(10ab^2)
=2/(5ab)+3/(10ab)
=7/(10ab)
(2):
2m/(5n^2p)-3n/(4mp^2)
=2pm^2/(5mn^2p^2)-3n^3/(4mn^2p^2)
=(8pm^2-15n^3)/(20mn^2p^2)
(3):
3y/(2x+2y)+2xy/(x^2+xy)
=3/2*y/(x+y)+2y/(x+y)
=7y/(2(x+y))
(4):
2x/(x^2-64y^2)-1/(x-8y)
=2x/(x^2-64y^2)-(x+8y)/(x-8y)x+8y)
=2x/(x^2-64y^2)
=(x+8y)/(x^2-64y^2)
2a/(5a^2b)+3b/(10ab^2)
=2/(5ab)+3/(10ab)
=7/(10ab)
(2):
2m/(5n^2p)-3n/(4mp^2)
=2pm^2/(5mn^2p^2)-3n^3/(4mn^2p^2)
=(8pm^2-15n^3)/(20mn^2p^2)
(3):
3y/(2x+2y)+2xy/(x^2+xy)
=3/2*y/(x+y)+2y/(x+y)
=7y/(2(x+y))
(4):
2x/(x^2-64y^2)-1/(x-8y)
=2x/(x^2-64y^2)-(x+8y)/(x-8y)x+8y)
=2x/(x^2-64y^2)
=(x+8y)/(x^2-64y^2)
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