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If we define a as a+1 anda as a-1 evaluate (I) (50+51+52)-(20+21+22) |
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Answer» Answer: 153-63=90 Step-by-step EXPLANATION: we add the 50+51+52=153 then, we add 20+21+22= 63 hence,we substacte them 153- 63= 90 |
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