80 + 10 equals 90 so the missing value is zero, ie 80 + 10 = 90 - 0
x - 2 = 4x + 46-2 = 3x + 46-48 = 3xx = -48/3 or -16
12 plus 0 is 12
2
x = -6
3x + 8 = 4x + 23x - 4x = 2 - 8-x = -6x = 6
7x + 9 = 6x + 17 7x - 6x = 17 -9 x = 8
80 + 10 equals 90 so the missing value is zero, ie 80 + 10 = 90 - 0
16
x - 2 = 4x + 46-2 = 3x + 46-48 = 3xx = -48/3 or -16
12 plus 0 is 12
2
x = -6
3 is the true!
Any negative value and 1.
81.
49