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calculeaza:3475+a-2643=897?9572-b+1305=10000

Răspuns :

832-a=897

a=897-832

a=65



10877-b=10000

-b=10000-10877

-b=-877

b=877


3475 + a - 2643 = 897

3475 + a = 897 + 2643

3475 + a = 3540

a = 3540 - 3475

a = 65


9572 - b + 1305 = 10000

9572 - b = 10000 - 1305

9572 - b = 8695

b = 9572 - 8695

b = 877