\(9,15:0,5+9,15\times9-9,15\)

\(=9,15\times\dfrac{10}{5}+9,15\times9-9,15\times1\)

\(=9,15\times2+9,15\times9-9,15\times1\)

\(=9,15\times\left(2+9-1\right)\)

\(=9,15\times10\)

\(=91,5\)

A new supermarket will be built next year.

We didn't have the picnic because the weather was bad.

\(a,3x+2=6x-7\)

\(\Leftrightarrow3x-6x=-7-2\)

\(\Leftrightarrow-3x=-9\)

\(\Leftrightarrow x=3\)

Câu còn lại mình ko rõ đề bài bạn ơi^^

If you don't go with me, I won't go to his house.

If it wasn't so late, we could have a drink.