Răspuns:
Explicație pas cu pas:
[(20+339:3+d:4)x7-5x400]:3-22x3+125x8=1000
[(20+339:3+d:4)x7-2000]:3-22x3+125x8=1000
[(20+339:3+d:4)x7-2000]:3-66+125x8=1000
[(20+339:3+d:4)x7-2000]:3-66+1000=1000
[(20+339:3+d:4)x7-2000]:3-66=1000-1000
[(20+339:3+d:4)x7-2000]:3-66=0
[(20+339:3+d:4)x7-2000]:3=0+66
[(20+339:3+d:4)x7-2000]:3=66
[(20+339:3+d:4)x7-2000]=66x3
[(20+339:3+d:4)x7-2000]=198
[(20+113+d:4)x7-2000]=198
[(133+d:4)x7-2000= 198
(133+d:4) x7=198+2000
(133+d:4)x7=2198
133+d:4=2198:7
133+d:4=314
d:4=314-133
d:4=181
d=181x4
d=724
