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7m^{2}-5-\left(m^{2}+3n-5+n-\left(-3+m^{2}\right)\right)
5-n teskarisini topish uchun har birining teskarisini toping.
7m^{2}-5-\left(m^{2}+4n-5-\left(-3+m^{2}\right)\right)
4n ni olish uchun 3n va n ni birlashtirish.
7m^{2}-5-\left(m^{2}+4n-5+3-m^{2}\right)
-3+m^{2} teskarisini topish uchun har birining teskarisini toping.
7m^{2}-5-\left(m^{2}+4n-2-m^{2}\right)
-2 olish uchun -5 va 3'ni qo'shing.
7m^{2}-5-\left(4n-2\right)
0 ni olish uchun m^{2} va -m^{2} ni birlashtirish.
7m^{2}-5-4n+2
4n-2 teskarisini topish uchun har birining teskarisini toping.
7m^{2}-3-4n
-3 olish uchun -5 va 2'ni qo'shing.
7m^{2}-5-\left(m^{2}+3n-5+n-\left(-3+m^{2}\right)\right)
5-n teskarisini topish uchun har birining teskarisini toping.
7m^{2}-5-\left(m^{2}+4n-5-\left(-3+m^{2}\right)\right)
4n ni olish uchun 3n va n ni birlashtirish.
7m^{2}-5-\left(m^{2}+4n-5+3-m^{2}\right)
-3+m^{2} teskarisini topish uchun har birining teskarisini toping.
7m^{2}-5-\left(m^{2}+4n-2-m^{2}\right)
-2 olish uchun -5 va 3'ni qo'shing.
7m^{2}-5-\left(4n-2\right)
0 ni olish uchun m^{2} va -m^{2} ni birlashtirish.
7m^{2}-5-4n+2
4n-2 teskarisini topish uchun har birining teskarisini toping.
7m^{2}-3-4n
-3 olish uchun -5 va 2'ni qo'shing.