как решить уравнения
1) -(3z = 7) = 8 - 2 (8-2)
2) 4х - 4,5 = 5x - 3 (2x - 1,5)
1) -(3z = 7) = 8 - 2 (8-2)
2) 4х - 4,5 = 5x - 3 (2x - 1,5)
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4х - 4,5 =5х-6х+4.5
4х+х=4.5+4.5
5х=9
х=9/5
Альтернативный вид :
х=1 4/5,х=1.8