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Sagot :

BOBYABELE32

1)

13/2t-3(3/2+t)=1/4t

=13/2t-9/2-3t=1/4t

=13/2-9/2-3t=1/4t

=26t-18-12t=t

=14t-18=t

=14-t=18

13t-t=18

t=18/13

2)

5(2/3x-2)-6(2/5x-1)= -5(1-1/5x)

=14/15x-4=-5+x

=14x-60=-75+15x

=14x-15x=-75+6

= - x=-15

x=15

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