Evaluate 1+-2/3 minus negative M where M equals 9/2

Why do this don't give reasonable answers?

Find the value of k so that x = - 1 and y = -1 is a solution of the linear equation 9kx + 12ky = 63

Last year, Amanda had $10,000 to invest. She invested some of it in an account that paid 6% simple interest per year, and she invested the rest in an account that paid 10% simple interest per year.

Word problem that can be modeled by addition of two negative integers

Nate has $188 he wants to buy tickets that cost 19 dollars for 6 friend does he have enough money

A recipe requires 300 milliliters of milk. Sara decides to triple the recipe for dinner. How many milliliters of milk does she need to cook dinner?

The perimeter of a rectangular painting is 274 centimeters. If the width of the painting is 63 centimeters, what is its length?

Taylor wants to paint his rectangular deck that 42 feet long and 28 feet wide. A gallon of paint covers about 350 square feet. How many gallons of paint will Taylor need to cover the entire deck?

V (v-1) - 2 (1-v) how to solve this

June solves a system of equations and gets (4, 5) as a solution. If one equation is 2x+3y=23, which of the following would be the other equation in this system? Answer Choices 4x+5y=23 x+y=9 2y+3x=23 2x+3y=22