2×5÷5-10+99×7÷8=.....

2 x 5 : 5 - 10 + 99 x 7 : 8
=> 2 - 10 + 693 : 8
=> 2 - 10 + 86,6
=> 76,6

semoga membantu ^_^

2×5÷5−10+99×7÷8
=78,625
Semoga membantu : )