He didn't follow the order the instructions were given to him
The Right expression is:
x-3x10-13
4 people x 45 minutes = 180 minutes total to paint 5 walls
180/5 = 36 minutes of man work per wall
36 * 4 walls = 144 total minutes
144/6 people = 24 minutes total
Square because it's sides and angles are always congruent with eachother
Answer: x = 
Step-by-step explanation:
7/12 = 1/2x
Multiply by 2
14/12=x
x = 1 1/6
Hope it helps <3