Răspuns :
a:b=1 rest c = > a = 1 x b + c = b + c = c + c + 20 = 2c + 20
2c + 20 + c + 20 + c = 360
4c + 40 = 360
4c = 360 - 40
4c = 320
c = 320 : 4
c = 80
a = 2 x 80 + 20 = 180
b = 80 + 20 = 100
180 + 100 + 80 = 360
2c + 20 + c + 20 + c = 360
4c + 40 = 360
4c = 360 - 40
4c = 320
c = 320 : 4
c = 80
a = 2 x 80 + 20 = 180
b = 80 + 20 = 100
180 + 100 + 80 = 360
a+b+c=360
a:b=1 rest c → a=1×b+c → a=1×c+20+c
b=c+20
________________________
1×c+20+c+c+20+c=360
4×c=360-(20+20)
4×c=360-40
4×c=320
c=320:4
c=80
b=80+20
b=100
a=1×100+80
a=180
a:b=1 rest c → a=1×b+c → a=1×c+20+c
b=c+20
________________________
1×c+20+c+c+20+c=360
4×c=360-(20+20)
4×c=360-40
4×c=320
c=320:4
c=80
b=80+20
b=100
a=1×100+80
a=180