Question

1)Calcule.
a) x/a + 8x/a-3x/a 
b)1/2x+1/3x
c)3a/x-5a/4x+7a/2x
d)1/x+1/y
e)7+x+y/x-y 
f)3/x-2/x+1
com calculo certo e montagem certa, me ajudem e urgente, ficaria grata, pela ajuda

Answer 1

a) x /a+ 8x /a- 3x/a = 6x/a
b) 1/2x + 1/3x = 3/6x + 2/6x = 5/6x
c) 12a/4x - 5a/4x + 14a/4x = 21a/4x
d) 1y/xy + 1x/xy = x+y/xy
e) 7x-7y/x-y + x²-xy /x-y + y/x-y = x²+xy+8x/x-y
f) 3/(x-2).(x+1) = 3 / x²+x-2x-2 = 3/x²-x-2             ok