Me ajudem por favor
a)9×+9+3×=15
b)16×-1=12×+3
c)3×-2=4×+9
d)5×-3+×=2×+9
e)17×-7×=×+18
f)×+×-4=17-2×+1
g)×+2×+3-5×=4×-9
h)5×+6×-16=3×+2×-4
i)5×+4=3×-2×+4
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