Algebra is solving for the unknown so
if you have 10 apples and you give 5 to your friend, how many apples would you have so that is also 10-5=x solve for x
or it could be more complicated like (x-2)/6+4x-3=17
Area of a rectangle is Length times width
So basically 380 * 280 should be the answer
The answer should be 106400
So one third means you mutilply by 3 so 3x5 is 15 model cars
