Question

se da a,b si c stiind ca a+b=689, c-b=113, 280+c=496 / altul 768-a=b,a+c=100,c-132=231 /altul a-b=252,b-c=624,c-55=45.

Answer 1

c=496-280
c=216
216-b=113
b=216-113
b=103
a+103=689
a=689-103
a=586
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? poate ai gresit un semn
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c=45+55
c=100
b=624+100
b=724
a=252+724
a=976