27x/50 - 21x/40 = 3450
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108x-105x/200=3450
3x/200=3450
3x=200×3450
x=200×3450/3
x=200×1150
x=230000.
3x/200=3450
3x=200×3450
x=200×3450/3
x=200×1150
x=230000.
rupsa10:
u r correct
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the answer is above in the page
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