Question

(-7) - (-9)² : (-3) - 8 - 3² • (-2) :4​

Answer 1

$( - 7) - {( - 9)}^{2} \div ( - 3) - 8 - {3}^{2} \times ( - 2) \div 4$

$- 7 + {9}^{2} \div 3 - 8 + {3}^{2} \times 2 \div 4$

$- 7 + 81 \div 3 - 8 + 9 \times 2 \div 4$

$- 7 + 27 - 8 + 18 \div 4$

$- 7 + 27 - 8 + 4,5$

$16,5$