Sagot :
A=25/26(3/13+7/26)
[tex]= \frac{25*3}{26*13} + \frac{25*7}{26*26} = \frac{75}{338} + \frac{175}{676} = \frac{150+175}{676} = \frac{325}{676} [/tex]
B=(7/10+5/100)-(8-795/100)
=(70/100+5/100)-(800/100-795/100)
=75/100-5/100
=70/100
=7/10
C = 1 - (1/6 + 5/12)
=12/12-(2/12+5/12)
=12/12-7/12
=5/12
D=24/15-[2/3-(11/5-2)]
=24/15-(2/3-(11/5-10/5)]
=24/15-(2/3-1/5)
=24/15-(10/15-3/15)
=24/15-7/15
=17/15
[tex]= \frac{25*3}{26*13} + \frac{25*7}{26*26} = \frac{75}{338} + \frac{175}{676} = \frac{150+175}{676} = \frac{325}{676} [/tex]
B=(7/10+5/100)-(8-795/100)
=(70/100+5/100)-(800/100-795/100)
=75/100-5/100
=70/100
=7/10
C = 1 - (1/6 + 5/12)
=12/12-(2/12+5/12)
=12/12-7/12
=5/12
D=24/15-[2/3-(11/5-2)]
=24/15-(2/3-(11/5-10/5)]
=24/15-(2/3-1/5)
=24/15-(10/15-3/15)
=24/15-7/15
=17/15