Answer :
4x = 7x -21
4x - 7x = -21
-3x = -21
X = 7
Check your work for your reason
4(7) = 7 (7) -21
28 = 49-21
28 = 28
They equal
4x - 7x = -21
-3x = -21
X = 7
Check your work for your reason
4(7) = 7 (7) -21
28 = 49-21
28 = 28
They equal