Răspuns :
456-(190*28-263*19)-7a=9*10+1
456-(5320-4997)-7a=91
456-323-7a=91
133-7a=91
133-91=7a
42=7a
a=42:7
a=6
sper ca team ajutat
456-(5320-4997)-7a=91
456-323-7a=91
133-7a=91
133-91=7a
42=7a
a=42:7
a=6
sper ca team ajutat
456-(190*28-263*19)-7a=9*10+1
456-(5320-4997)-7a=90+1
456-323-7a=91
133=91+7a
42=7a
6=a
456-(5320-4997)-7a=90+1
456-323-7a=91
133=91+7a
42=7a
6=a