m.m.c me ajudem pfvr é para amanhã
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a)
a/ y-x + a/ y - x
2× a/y-x
2a/y-x
b)
x-5/x^2 -1 + 5/x^2 - 1
x-5+5 / x^2 -1
x/ x^2 -1
c) igual a " b "
d)
x+y / x-6 - 5x -2y / x-6
x-y-(5x-2y) / x-6
x+y-5x+2y / x-6
- 4x + 3y / x - 6
a/ y-x + a/ y - x
2× a/y-x
2a/y-x
b)
x-5/x^2 -1 + 5/x^2 - 1
x-5+5 / x^2 -1
x/ x^2 -1
c) igual a " b "
d)
x+y / x-6 - 5x -2y / x-6
x-y-(5x-2y) / x-6
x+y-5x+2y / x-6
- 4x + 3y / x - 6
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