Answer:
B
Step-by-step explanation:
You can multiply both sides by c to remove the fraction part.
d(c) = ax + by/c(c)
dc = ax + by
Then subtract "by" from both sides to isolate x.
dc - by = ax - by + by
dc - by = ax
Then divide both sides by a to completely isolate the variable x.
(dc - by)/a = ax/a
(dc - by)/a = x
B
