find three consecutive numbers whose sum is 81
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let first consecutive no. be x
so other two numbers will be x+1 and x+2
according to the question:
x+(x+1)+(x+2)=81
3x+3=81
3x=81-3
3x=78
x=78÷3
x=26
hence, the numbers are 26,27,28
so other two numbers will be x+1 and x+2
according to the question:
x+(x+1)+(x+2)=81
3x+3=81
3x=81-3
3x=78
x=78÷3
x=26
hence, the numbers are 26,27,28
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