Answer :
Answer:
300 + 4x
Step-by-step explanation:
200 + 100 = 300
3x + x = 4x
(a plain variable like "x" always has an invisible one in front of it)
Answer:
300 + 4x
Step-by-step explanation:
200 + 100 = 300
3x + x = 4x
(a plain variable like "x" always has an invisible one in front of it)