Zamień iloczyn na sumę.
a) 3( x - 3 ), 5( y + z ), 4(3x - y), 3(4a - c), -2(7 - 4n)
b) 1/2 ( 4z + 2 ) , -1/3 ( 6b - 3 ) , 0,2 ( x - 5y ) , 3( 1/3a + 1 )
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a.
3(x-3)=3x-9
5(y+z)=5y+5z
4(3x-y)=12x-y
-2(7-4n)=-14+8n
b.
1/2(4z+2)=2z+1
0,2(x-5y)=0,2x-1y
3(1/3a+1)=1a+3
a) 3x+9, 5y+5z, 12x-4y,12a-3c, -14+8n
b) 2z+1, -2b+1, 0,2x-1y, a+3