3 * ( х - 2 )= 10 - х
3х - 6 = 10 - х
3х + х = 10 + 6
4х = 16
х= 16 : 4
х = 4
проверка :
3* ( 4 - 2 ) = 10 - 4
х= 4
4 * 4 = 16
3 * ( х - 2 )= 10 - х
3х - 6 = 10 - х
3х + х = 10 + 6
4х = 16
х= 16 : 4
х = 4
проверка :
3* ( 4 - 2 ) = 10 - 4
4х = 16
х= 16 : 4
х= 4
проверка :
4 * 4 = 16