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a + b = 64
a : b = 3 ( rest 8 )
a = ?
b =?


Răspuns :

a=3b+8
a+b=64.
3b+8+b=64
4b=56 =>b=14,a=50
a+b=64
a:b=3 rest 8
a=3b+8
3b+8+b=64
4b+8=64
4b=64-8
4b=56
b=56:4
b=14
a=3b+8
a=3x14+8
a=50