Question

Zamień iloczyn na sumę 3(x-3) , 5(y+z) , 4(3x-y) , 3(4a-c) , -2(7-4n)

Answer 1

3(x-3) = 3*3= 9 x=9
5(y+z) + 5*x= 5*y= 5 z,y=5
4(3x-y)= 4*3= 12 12*x= 12 y=12
3(4a-c) = 3*4= 12 12:a= 6 a=2 12*2= 24 c=24
-2(7-4n)= (-2)-7=(-5)+4= (-9) n+ (-9)
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PROSZĘ :D

Answer 2

3x-9
5y+5z
12x-4y
12a-3c
-14+8n
o to chodziło ???