Answered

{3*7+[3/2-(3*4/3)-21}

Sagot :

Jameskino25viz
[tex]{3*7+[ \frac{3}{2}-(3* \frac{4}{3})-21]} \\ \\ =21+[ \frac{3}{2}-4-21] \\ \\ =21+(-23 \frac{1}{2}) \\ \\ = -2 \frac{1}{2} or - \frac{5}{2} [/tex]