Simplify — task. Maths CBSE Live product, Class 7 (2025-26).

Simplify the expression 7\((\)\(u\) \(+\) \(a\)\()\) \(–\)\(a\).

$7 \cdot u + 6 \cdot a$
$7 \cdot u - 6 \cdot a$
$u - 6 \cdot a$
$7 \cdot u \cdot 6 \cdot a$

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