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Bonjour pouvais vous m'aider a résoudre ce problème je n'arrive pas

Bonjour pouvais vous m'aider a résoudre ce problème je n'arrive pas-example-1
User Max Yankov
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1 Answer

3 votes

Answer: A =
-(13)/(18) - (9)/(-14)

=>(x7)
-(13)/(18) + (9)/(14) (x9)

=>
(-91+81)/(126)

=>
(-10)/(126) (÷2)

=>
-(5)/(63)

B =
-(17)/(28) + (15)/(36) (÷3)

=>(x3)
-(17)/(28) + (5)/(12) (x7)

=>
-(51)/(84) + (35)/(84)

=>
(-51+35)/(84)

=>
(-16)/(84) (÷4)

=>
-(4)/(21)

User Gerdtf
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