Question

12:{390:[500-(5³+5.7²)] }

Answer 1

12:{390:[500-(5^3+5.7^2) ] }

=12:{390:[500-(125+245 ) ] }

=12:{390:[500-370] }

=12:{390:130}

=12:3

=4

Answer 2

\(12:\left\{390:\left[500-\left(5^3+5.7^2\right)\right]\right\}\)

\(=12:\left\{390:\left[500-\left(125+5.49\right)\right]\right\}\)

\(=12:\left\{390:\left[500-\left(125+245\right)\right]\right\}\)

\(=12:\left\{390:\left[500-370\right]\right\}\)

\(=12:\left\{390:130\right\}\)

\(=12:3\)

\(=4\)

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