an=4n-5 then the value of a3
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Step-by-step explanation:
an=4n-5
a=4-5
a=-1
Put a=-1 in equation
- 1n=4n-5
-1n-4n=-5
-1-4n=-5
-3n=-5
n=-5+3
n=-2
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an=4n-5 then the value of a3
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