27+36+4+13=80
27+13=40
36+4=40
40+40=80
45+8+5+12=70
45+5=50
8+12=20
50+20=70
27+36+4+13 = 27+13+36+4 = 40+40 = 80
45+8+5+12= 45+5+8+12 = 50 + 20 = 70
27+36+4+13=80
27+13=40
36+4=40
40+40=80
45+8+5+12=70
45+5=50
8+12=20
50+20=70
27+36+4+13 = 27+13+36+4 = 40+40 = 80
45+8+5+12= 45+5+8+12 = 50 + 20 = 70