What is the largest whole number that divides exactly into 20 and 18

Given: x + y = 6. if xe (-15, -6, -1), then which of the following sets of ordered pairs are solutions? © {(-15, -21), (-6, -12), (-1, -7)} [(-15, 21), (-6, , 7)} {(-15, 21), (-6, 12), (-1, -7)}

Ten times the square of a non-zero number is eqaul to ninety times the number

How do the number line graphs of the solutions sets of -23 > x and x-23 differ?