one integer is 6 more than another. Their product is 55. Find the integers

Let the two integers be x and y, where y is the bigger integer.

y is bigger than x be 6, so that you need to add 6 to x for them to be equal.

y = 6 + x

Their product is xy = 55

Can you solve the pair of simultaneous equations now?

find two consecutive integers whose product is 42.

Try out the method I posted earlier and post what you get.