You can put this solution on YOUR website! "The length of a rectangle is 7 inches more than three times the width. The perimeter is 94 inches. Find the length and width"
x = width
3x + 7 = length {length is 7 more than 3 times width}
Perimeter of a rectangle = 2(width) + 2(length)
2x + 2(3x + 7) = 94 {perimeter is 2 x width + 2 x length}
2x + 6x + 14 = 94 {used distributive property}
8x + 14 = 94 {combined like terms}
8x = 80 {subtracted 14 from both sides}
x = 10 {divided both sides by 8}
3x + 7 = 37 {substituted 10, in for x, into 3x + 7}
