Answer :
x will be 6
because when y is 7 and x is 2 they multiplied 7×3 and they got y=21 so you have to multiply 2 by 3 and that is 6 hopefully this helps.
because when y is 7 and x is 2 they multiplied 7×3 and they got y=21 so you have to multiply 2 by 3 and that is 6 hopefully this helps.