Answer:
MP=29
Explanation:
2 values
1)17+3y=MP
2)5y+9=MP
MP=MP
17+3y=5y+9
8=2y
4=y
-----------------------------------------
replacing Y
1)17+3y=17+3(4)=17+12=29
2)5y+9=5(4)+9=20+9=29
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