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b)-5/6
c)7/8
d)-43/44
e)-13/12
f)-12x+2F = 3(24)/4
F-9
y=-9/2+3/4
y=-15/4
__________
1/3 - x=4/3
-x=4/3-1/3
-x=1 por menos 1
x=-1
___________
2/9x - 1/9=3/36
2/9x=3/36+1/9
2/9x=7/36
x=7/36 % 2/9
x=7/648
_-________
-3/5 - x=5/9
-x=5/9 + 3/5
-x=52/45 por menos 1
x=-52/45
__________
4/3 + x=1/4
x=1/4-4/3
x=-13/12
_______