1)2,5у-8,3*(-5у)+4,5х
2)m*(-0,75n)*(0,6k )
3)(3x-4y+5z)-(5x-7y+1целая 5 6 )
2)m*(-0,75n)*(0,6k )
3)(3x-4y+5z)-(5x-7y+1целая 5 6 )
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Ответ:
Пошаговое объяснение:
1) 2,5у+41,5у+4,5х=44у+4,5х
2) -0,75mn*(0.6k)=-0.45mnk
3) 3x-4y+5z-5x+7y-1 5/6=3y-2x+5z-1 5/6