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Wiki User
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8,000 minus 900 is 7,100.
( x2 - 121 ) = (x + 11) times (x - 11)
7 billion minus 900 million = 6,100,000,000
1224 - 900 = 324
1,143 - 900 = 243
1400
900 - 20% = 720
3000 minus 900 = 2100
745.14
1100
2520