Jawabanmu

2014-02-10T00:57:26+07:00
1. 24m=12........  m=12/24=1/2

2. 3z+11=-28 ...... 3z=-39 .......... z=-13


3. 25-4x=6y+15 ........ 10=10y ........ y=1

4. -4x-15=1-8x ......  4x=16 ..... x=4