Alot is in the shape of a trapezoid. the sum of the bases is 280 feet. if the area of the lot is 8,400 square feet, what is the distance across the lot, i.e. the altitude of the figure?

the altitude of the trapezoid .

With algebraic expressions, you can’t add and subtract any terms like you can add and subtract numbers. Terms must be like terms in order to combine them. So, you can’t always simplify an algebraic expression by following the order of operations. You have to use the distributive property to rewrite the expression and then combine like terms to simplify. With numeric expressions, you can either simplify inside the parentheses first or use the distributive property first.