Question

Fill in the blank.

3x − 5 = 7 − x ⇒ x = ______

Answer 1

x = 3
3x − 5 = 7 − x
or, 3x + x = 7 + 5 [Transposing x to the L.H.S. and 5 to the R.H.S.]
or, 4x = 12
or, `(4x)/4=12/4` = 124
or, x = 3