Question

Verify that a+b=b+a if a = -8/5 and b = 7/20​

Answer 1

Answer:

$lhs \\ a + b = \frac{ - 8}{5} + \frac{7}{20 } \\ = \frac{ - 32 + 7}{20} \\ = \frac{25}{20} \\ \\ now \: \: \: \: rhs \\ b + a = \frac{7}{20} - \frac{8}{5} \\ = \frac{7 - 32}{20} \\ = \frac{ - 25}{20} \: \\ hence \\ \: lhs \: = rhs \\ pro ved$