Question

9

1

2

×3.8+5

1

5

×9.5+1÷

2

19

．

Answer 1

9

1

2

×3.8+5

1

5

×9.5+1÷

2

19

=9

1

2

×3.8+5.2×9

1

2

+1×9

1

2

=9

1

2

×（3.8+5.2+1）
=9

1

2

×10
=95．