4. 1/f = 1/15 - 1/10 = -30
M = -30 / 25 + 30 = -30 / 55 = - 6 /11
maya tegak diperkecil
5. 1/20 - 1/60 = 30
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4. 1/f = 1/15 - 1/10 = -30
M = -30 / 25 + 30 = -30 / 55 = - 6 /11
maya tegak diperkecil
5. 1/20 - 1/60 = 30