Answer:
x =

Explanation:
gven
ax + b = cx + d ( subtract cx from both sides )
ax - cx + b = cx - cx + d ( simplify both sides )
ax - cx + b = d ( subtract b from both sides )
ax - cx + b - b = d - b ( simplify )
ax - cx = d - b ← factor out x from each term on the left side )
x(a - c) = d - b ← divide both sides by (a - c )
x
=
, that is
x =
