在等式的左边添上括号,使算式成立.5×9+15÷3-2=38 5×9+15÷3-2=60

问题描述:

在等式的左边添上括号,使算式成立.5×9+15÷3-2=38 5×9+15÷3-2=60

5×(9+15)÷3-2=38
5×9+15÷(3-2)=60

5×(9+15)÷3-2
=5X24÷3-2
=120÷3-2
=40-2
=38
5×9+15÷(3-2)
=45+15÷1
=60÷1
=60

5×[(9+15)÷3]-2=38
5×9+15÷(3-2)=60

5*(9+15)/3-2=38
(5*9+15)/(3-2)=60

5×(9+15)÷3-2=38
(5×9+15)÷(3-2)=60

5×(9+15)÷3-2=38
5×9+15÷(3-2)=60