Sagot :
Merhaba
7x - 15 = 83 => -15 karşıya +15 diye geçer.
7x = 83+15
7x = 98 ise
x = 14 olmalıdır.
sayiyi bilmedigimiz icin yerine x yazariz.
7 kati 7x
15 eksigi dedigi icin araya -
yani 7x-15
7 kati 7x
15 eksigi dedigi icin araya -
yani 7x-15
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