#1**+5 **

I will take a crack at it. Somebody should verify it though.

1- 12 / 36 = [6x -4] / 24 cross multiply

288 = 36[6x - 4]

288 =216x - 144 add 144 to both sides

432 =216x divide both sides by 216

x = 2

2-[10x + 5] + 55 = 180 subtract 55 from both sides

10x + 5 = 125 subtract 5 to both sides

10x=120 divide both sides by 10

x = 12 degrees.

Guest Feb 27, 2017