Question

How do you evaluate `-4[ 5+ ( 4- 7) ]`?

Answer 1

`-8`

Explanation:

In this case, the order of operations:

Parenthesis
Exponents
Multiplication/Division
Addition/Subtraction

Would apply so:

`-4[5+(4-7)]`

Solve the most inner parenthesis first:

`-4[5+(-3)]`

Because of the negative we get:

`-4[5-3]`

We still have values in the parenthesis, so we must equate those first:

`-4[2]`

Then just multiply what you have left:

`-8`

Answer 2

First, solve the curve bracket [()]
`-4[5+(-3)]`
You must've learned in school that,
`(+) xx (-) = (-)`
Relying on that,
`-4[5-3]`
Solve
`-4[2]`
When there is no sign between a no. and a bracket, it means we have to multiply it,
`-4[2]=-4xx2`
It is easy to multiply it,
`-8`