20/120 = 1.5/x
20x = 120×1.5
20x = 180
X = 180/20
X = 9
Jadi panjang setelah alumunium di panaskan di suhu 120 derajat adalah 9 meter.
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20/120 = 1.5/x
20x = 120×1.5
20x = 180
X = 180/20
X = 9
Jadi panjang setelah alumunium di panaskan di suhu 120 derajat adalah 9 meter.