Question

решите уравнение пж (2z-1)/4 = (3z+3)/5

Answer 1

1/2z-1/4=3/5z+3/5
1/2z-3/5z=3/5+1/4
5/10z-6/10z=12/20+5/20
-1/10z=17/20
z=-(17/20/1/10)
z=-(17/20*10/1)
z=-(17/2)
z= -8.5

Answer 2

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