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96-(9x5-9xi)=5x6+57 ajutatima

Răspuns :

96-(45-9i)=30+57
96-45+9i=87
51+9i=87
9i=87-51
9i=36
i=36/9
i=4
96 - ( 9 x 5 - 9 x i ) = 5 x6 + 57
96 - ( 45 - 9 x i ) = 30 + 57
96 - ( 45 - 9 x i ) = 87
45 - 9 x i = 96 - 87
45 - 9 x i = 9
9 x i = 45 - 9
9 x i = 36
i = 36 : 9
i = 4