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ditanya: x..?
jawab:
f(x)=g(x)
6-2x=2x+1
6-1=2x+2x
5=4x
1,25=x (C)
.
pembuktian
f(x)=6-2x
f(1,25)=6-2(1,25)
. =6-2,5
. = 3,5
g(x)=2x+1
g(1,25)= 2(1,25)+1
. =2,5+1
. =3,5