“the difference of fifty-four and seven times a number”?

Difference refers to subtracting. So you would subtract the two numbers. Seven times a number means 7 times x or 7x (which is the same thing). So It would be 54 - 7x = y

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3