JOHN NEEDED 13.71 FEET OF WIRE TO FIX A LAMP. HE BOUGHT 14 AND A HALF FEET OF WIRE. HOW MUCH WIRE DID HE HAVE LEFT AFTER FIXING THE LAMP?
Four times the square of a number is 45 more than eight times the number. What is the number?
The length of a rectangle is 6 cm less than twice its width. Find the dimensions of this rectangle if its area is 108 cm^2.
Please explain how to do this kind of problem