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a+b=53      a:b=4 rest 3       a= b=


Răspuns :

a+b=53
a=4b+3
4b+3+b=53
5b=50
b=50:5
b=10
a+10=53
a=43
a + b = 53
a = 4b + 3
4b + 3 + b = 53
5b = 53 - 3
5b = 50
b = 50 : 5
b = 10
a = 53 - 10
a = 43