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4z + 6= 24 - 2z
4z + 2z=24 - 6
6z= 18
z= 18/6
z= 3
Jadi, nilai z= 3.
No. 2
2(x + 3)= 3(x- 4)
2x + 6= 3x - 12
2x - 3x= -12 - 6
-x= -18
x= 18
Jadi, nilai z= 18.