If u do a google image search, ur answer will pop right up. It would also tell u how to do it. That's what I usually do when I'm having troubles on math.
Answer:
x = 3
Step-by-step explanation:
First, subtract 3x from both sides. That leaves 5x+6=21.
Next, subtract 6 from both sides. That leaves 5x=15.
Lastly, divide by 5 and you get x=3
Answer:
1.5 meters = 150 centimeters (multiply by 100)
Therefore, you should cut off
centimeters.