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24 votes
Is ab = a when b = 3, always, sometimes, or never true? Explain your answer.

1 Answer

5 votes

Never true

Simple concept see below :

Given :-


\dashrightarrow \sf ab = a


\\

divide both side by a


\dashrightarrow \sf (ab)/(a) = (a)/(a)


\\


\dashrightarrow \sf (\cancel ab)/(\cancel a) = (a)/(a)


\\


\dashrightarrow \sf (b)/(1) = (a)/(a)


\\


\dashrightarrow \sf b = (a)/(a)


\\


\dashrightarrow \sf b = \cancel(a)/(a)


\\


\dashrightarrow \sf b = (1)/(1)


\\


\dashrightarrow \bf b =1

So here given b = 3

but it's clearly visible that b = 1

.°. b ≠ 3

therefore it's never true

User Jpf
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