Jawabanmu

2014-03-10T15:07:27+07:00
4m+10≤m+40
= 4m-m≤40-10
= 3m≤30
= m≤30 : 3
= m≤10
1 5 1
2014-03-10T15:08:08+07:00
4m+10≤m+40
4m-m
≥40-10
=3m≥30
m≥10

mungkn ya