First you would solve 4x=28. Divide both sides by 4 and you'll get x= 7. Then you plug in the 7 in replacement for the x in the equation, 29-5x and you'll get as an answer -6!!
<span> He could draw a diagram of a rectangle with dimensions x – 1 and x – 6 and then show the area is equivalent to the sum of x2, –x, –6x, and 6.</span>
I can help with CL 2-107. All you have to do is simplify the equation on both sides, and then isolate <em>w</em> to find its value.
6w - 5 + 8w - 2w - 3 = 9w - 24
(-5) + 12w - 3 = 9w - 24
-8 + 12w = 9w - 24
-8 + 3w = -24
3w = -16
w = 
w = -5.33
Hope that helps! Sorry I couldn't help with the other ones!