You draw a straight line and then put your number on the line. If you have to find a negative number, you can just go below zero. Positive numbers on a number line are always above zero. Hope this helps!
4w=34 would be the correct equation if I’m understanding what the question is asking!
The answer is 3x.
Factor out 3x and u get 3x(x-3).
There is a formula for the area of a parallelogram which is bxh
(base x height)
Remember the height is always straight so do not use the 12 value.
21x9=189
Hope this helped!