Help ASAP!! Which equation, when soved, resuts in a different value of x than the other three?
-7/8x - 3/4 = 20
3/4 + 7/8x = -20
-7 (1/8)x -3/4 =20
-7/8(-8/7)x - 3/4 = 20(-8/7)

In a certain pentagon, the interior angles are a,b,c,d,e where a,b,c,d,e are integers strictly less than 180. ("strictly less than 180" means they are "less than and not equal to" 180.) if the median of the interior angles is 61 and there is only one mode, then what are the degree measures of all five angles?

What is the value of x in the equation 6(x + 1) – 5x = 8 + 2(x – 1)?

Enter the missing numbers in the boxes to complete the table of equivalent ratios of lengths to widths. ? 18 8 ? 10 30 12 ?