Spot the error and find the reason — task. Mathematics CBSE, Class 8.

UPSKILL MATH PLUS

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Answer variants:

Results in

$30ab$

Cannot cancel

$15$ from the expression

Cannot cancel

$7a$ from the expression

Results in

$15(a+b)$

Spot the suitable error reason.

1.

$\frac{7 a + 15}{15} = 7 a$ -

Correct the error and conclude the answer.

2.

$15 a + 15 b$ -

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