Use * for multiplicatrion when you also have x symbols present
a * 2b/6 * 4/(5a) = 8 b/5
(I assumed the "5a" was the denominator)
(xy^2)/7 * (7x^2)/y = x^3y
Try the others again. You aren't doing it right.
for the second one wouldnt it just be x^3
No. You have a y^2 in the numerator and a y in the denominator. They do not cancel out
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