(300*x-72):7=96+108
(300x-72):7=204
300x-72=204*7
300x-72=1428
300x=1428+72
300x=1500
x=1500:300
x=5
(300*5-72):7=96+108
204=204
200-560:(y+36)=48*4
200-560:(y+36)=192
560:(y+36)=200-192
560:(y+36)=8
y+36=560:8
y+36=70
y=70-36
y=34
200-560:(34+36)=48*4
192=192