A-86=640
A=640+86
A=726
696-x=240
X=696-240
X=456
X+150=400
X=400-150
X=250
560+b=840
B=840-560
B=280
A-86=640
A=640+86
A=726
696-x=240
X=696-240
X=456
X+150=400
X=400-150
X=250
560+b=840
B=840-560
B=280