1 Which equation could be used to solve for x? (Choose all that are correct.)
A. 3X - 20 = X + 40
B. 3X - 20 + X + 40 = 90
C. X + 40 + 3X - 20 = 180
D. X + 40 = 3X - 20​

1 Which equation could be used to solve for x Choose all that are correct A 3X 20 X 40B 3X 20 X 40 90C X 40 3X 20 180D X 40 3X 20 class=