Question

Verify 7/8+(-1/7)=(-1/7)+7/8

Answer 1

Answer:

$\frac{7}{8} + \frac{ - 1}{7} = \frac{ - 1}{7} + \frac{7}{8} \\ \\ lhs \\ \frac{7 \times 7 + ( - 1 \times 8)}{56} \\ \frac{49 - 8}{56} \\ \frac{41}{56} \\ \\ rhs \\ \frac{( - 1 \times 8) + 7 \times 7}{56} \\ \frac{ - 8 + 49}{56} \\ \frac{41}{56} \\ \\ hence \: rhs = lhs \: \: \: \: \: \: \: \: it \: verfied$

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