Question

Help please! If you don't mind please explain or show the work so I'll understand

Answer 1

For the first picture: -4

For the second picture: 105

For the third picture: 4

Explanation:

for the first picture:

Use PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction)

calculate within the parentheses

`10-\left(7+\left(2\cdot \:14/ \:2^2\right)\right)`

Do exponents first

2* 2= 4

`10-\left(7+\left(2\cdot \:14/ \:4\right)\right)`

Multiply and divide left to right

`10-\left(7+7)`

10-14

subtract

-4

Explanation:

For the second picture:

`\left(4^2/ \:8\left(3\cdot \:4\right)\right)+86-5`

Use PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction)

calculate within the parentheses

`\left(4^2/ \:8\left(12\right)\right)+86-5`

`\left(16/ \:8\left(12\right)\right)+86-5`

`\left(2\left(12\right)\right)+86-5`

`\left(24)+86-5`

Add and subtract left to right

`24+86-5\\110-5\\105`

Explanation:

for the third picture:

`9-3^2-\left(\left(24/ \:2^3\right)\cdot \:5\right)+19`

Use PEMDAS (parentheses, exponents, multiplication, division, addition, subtraction)

calculate within the parentheses

`9-3^2-\left(\left(24/ \:8\right)\cdot \:5\right)+19\\9-3^2-\left(3\cdot \:5\right)+19\\9-3^2-\left15+19\\`

Calculate with exponents

`\\9-9-\left15+19\\`

Add and subtract left to right

`\\0-\left15+19\\\\`

`-15+19`

`=4`