Nomor 13 sama 14 tolong pakai cara jangan ngasal makasih
A.5×7+6×10+7n+8×5+9×2=153+7n
f=24+h
mean=(153+7n)÷(24+n)
6,4(24+n)=153+7n
153,6+6,4n=153+7n
153,6-153=7n-6,4n
0,6=0.6n
n=1
Nomor 13 sama 14 tolong pakai cara jangan ngasal makasih
A.5×7+6×10+7n+8×5+9×2=153+7n
f=24+h
mean=(153+7n)÷(24+n)
6,4(24+n)=153+7n
153,6+6,4n=153+7n
153,6-153=7n-6,4n
0,6=0.6n
n=1