Minta caranya dong help

30×3+35×4+40×5+45×8+50×X+60×3
=970 + 50X = 44
=jumlah data 3+4+5+8+X+3 = 23+X
rata2 = 44 (970+50X)/(23+X)
1012+44X = 970 + 50X
42= 6X
X = 7
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