Question

−3[2 + 4 × 2 + (10 − 5) ÷ 5]

Answer 1

-39

Explanation:

`{ \blue{ \sf{ - 3{[2 + 4 * 2 + (10 - 5) / 5]}}}}`

`{ \blue{ \sf{ - 3{[6 * 2 + (10 - 5) / 5]}}}}`

`{ \blue{ \sf{ - 3{[12 + (10 - 5) / 5]}}}}`

`{ \blue{ \sf{ - 3{[12 + (5) / 5]}}}}`

`{ \blue{ \sf{ - 3{[12 + 1]}}}}`

`{ \blue{ \sf{ - 3[13]}}}`

`{ \red{ \sf{ - 39}}}`

Answer 2

-33

Explanation:

With the brackets in an equations, it just means you are going to be solving within there first before moving on.

For any equations such as this, you'll want to follow PEMDAS.

Parenthesis (x)
Exponents
`x^(2)`
Multiplication x * y
Division x/y or x÷y or
`(x)/(y)`
Addition x+y
Subtraction x-y

To start, we're just going to take the bracket equations 2+4 x 2 + (10 - 5)


`2+4*2+5/5`

Moving down PEMDAS we have no exponents, but multipication and division, whichever comes first in the equation.

4*2 = 8

5/5 = 1

2+8+1 = 11

-3[11] = (You use multiplication here) -33