Kayleigh won 50 candy bars playing video games at her school's game night. Later, she gave two to each of her friends. She only has 10 candy bars remaining. How many friends does she have?

△cde maps to △stu with the transformations (x, y) arrowright (x − 2, y − 2) arrowright (3x, 3y) arrowright (x, −y). if cd = a + 1, de = 2a − 1, st = 2b + 3 and tu = b + 6, find the values of a and b. the value of a is and the value of b is .

For the equations below which statement is true ? -2x=14 6x=-42

How do you use the elimination method for this question? explain, because i really want to understand!