-0.2²+(1/5)²-|-3²-9|+(7/3)²÷7/9 “/”代表分数线 如 7/9 等于9分之7

问题描述:

-0.2²+(1/5)²-|-3²-9|+(7/3)²÷7/9 “/”代表分数线 如 7/9 等于9分之7

-0.2²+(1/5)²-|-3²-9|+(7/3)²÷7/9
=-0.04+0.04-18+49/9×9/7
=-18+7
=-11