Răspuns:
c = 50
Explicație pas cu pas:
40+3·{32:8+3·[c+3·(200: 4–98:2)]} =529 <=>
3·{32:8+3·[c+3·(200: 4–98:2)]} =529-40 = 489 <=>
32:8+3·[c+3·(200: 4–98:2)] = 489 : 3 = 163 <=>
4 + 3·[c+3·(200: 4–98:2)] = 163 <=>
3·[c+3·(200: 4–98:2)] = 163-4 = 159 <=>
c+3·(200: 4–98:2) = 159:3 = 53 <=>
c = 53 - 3·(200: 4–98:2)
c = 53 - 3·(50-49) <=>
c = 53 - 3·1
c = 53-3
c = 50
