Answer: 121
Step-by-step explanation:
Answer:
100, 40, 40
Step-by-step explanation:
The estimated cost is 400$
Okay first you need to combine like terms together (3x and 1x)
7x + 4 = 5 + 4x
now you need x only on one side, you could subtract either 7x or 4x
3x + 4 = 5
subtract 4 over
3x = 1 is the answer