Question

What is `3\cdot [ - 2 1 \div [ 3 - ( 4 - 8 ) ] \}`?

Answer 1

We work the brackets from the inside out:

Explanation:

`4-8=-4`
`3-(-4)=3+4=7`
`21div7=3`
Now the minus-sign and multiplication:
`3*(-3)=-9`