Simplify the following expression: (x + 6y) − (3x − 10y). if the final answer is written in the form ax + by, what is the value of a?

answer for blank 1:

A20? -foot ladder is placed against a vertical wall of a? building, with the bottom of the ladder standing on level ground 19 feet from the base of the building. how high up the wall does the ladder? reach?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

If you are trying to move an attached term across the equal sign (=), what operation would you use to move it?