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Algebraic Expressions — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSAlgebraic Expressions2 Marks
Question
Add the following expression: $uv - vw, vw - wu$ and $wu - uv$
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Answer

We have, $uv - vw + (vw - wu) + (wu - uv)$
$= uv -vw + vw - wu + wu - uv$
On combining the like terms.
$= uv - uv - vw + vw - wu + wu $
$= 0 + 0 + 0 = 0$

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