Răspuns :
39a + 39b - 39×14 = 3900
39( a + b - 14) = 3900
a + b - 14 = 100
a + b = 114
39( a + b - 14) = 3900
a + b - 14 = 100
a + b = 114
39a+39b-39x=3900
39a+39b-546=3900
39a+39b=3900+546=4446
a+b=4446:39=114
a+b=114
39a+39b-546=3900
39a+39b=3900+546=4446
a+b=4446:39=114
a+b=114