What is the system subtitution of 2y=x+1; - 2x-y=7

What can be either addition subtraction division or multiplication

Write the number 10 less than 770

What is a multiple of 9 between 141 163 180 and 155

How do you do long division how do you do long division on 35 / 2

2 - (-8) (-3) = a. 12 b. 1 c. 7 d. 14

What is the rate for 171 And 3

At the start of the summer, you have $603.15 in the bank. You make deposits of $90.89 in June, $106.03 in July, and $70.04 in August. At the end of the summer, how much money do you have in the bank?

A plane traveling from phoenix to san Francisco with a tailwind of 35 miles per hour takes 2.5 hours. returning with the headwind it takes the same plane 2 hours and 45 minutes. what is the average speed of the plane in calm conditions?

Mildred bought 2-cent stamps, 4-cent stamps, and 5-cent stamps for $4.35. The number of 2-cent stamps exceeded the number of 5 cent stamps by 50. The number of 4-cent stamps was 10 less than twice the number of 5-cent stamps.

How to solve ([120-2 + (46-15) + 2] - (9+4)