Question

8+7.9-{2.1-6.3-(2.1÷0.9)+15.2}=?​

Answer 1

$8 + 7.9 - [2.1 - 6.3 - ( \frac{2.1}{0.9} ) + 15.2] \\ \\ 15.9 - </p><p>[2.1 - 6.3 - 2.3 + 15.2] \\ 15.9 - 2.1 + 6.3 + 2.3 - 15.2 \\ 25.5 - 17.3 = 8.2$

Answer 2

8+79/10-[2.1-6.3-(21/10÷9/10)+15.2]

8+79/10-[2.1-6.3-(21/10×10/9)+15.2]

8+79/10- [-4.2+15.2-7/3]

8+79/10 -[11-7/3]

8+79/10-26/3

8-23/30

217/30