Question

SHOW ALL THE STEPS TO SIMPLIFICATION1. 16-20÷42. 12+4×53. 32÷8×44. 27÷3^35. [16-20]÷46.
`\frac{ - 20 + 8} { - 4}`7. -(2-4)^58. 9-3^2

Answer 1

To solve these expressions you have to apply the order of operations known as PEMDAS which stands for Parentheses, Exponent Multiplication/Division, Addition/Subtraction.→ first solve the terms on parentheses, then the exponents, then the multiplications/divisions and finally the aditions or subtractions.

1.

`16-20/4`

The Division must be solve first:

`\begin{gathered} 16-20/4 \\ 16-5 \end{gathered}`

Next solve the subtraction

`16-5=11`

2.

`12+4\cdot5`

First operation to solve is the multiplication:

`\begin{gathered} 12+4\cdot5 \\ 12+20 \end{gathered}`

Next solve the addition

`12+20=32`

3.

`32/8\cdot4`

First solve the division

`32/8=4`

Then solve the multiplication

`4\cdot4=16`