Question

40÷{19−1+(6÷4−1)} PEMDAS form

Answer 1

Answer & Step-by-step explanation:

PEMDAS:

Parentheses

Exponents

Multiplication and Division left to right

Addition and Subtraction left to right

We have two forms of grouping in the expression. Do the inner-most one first, still following PEMDAS within the grouping symbol:

Simplify division:

`6/4=1.5\\1.5-1=0.5\\`

Re-insert:

`40/(19-1+0.5)`

Simplify subtraction and addition within parentheses:

`19-1+0.5\\18+0.5\\18.5`

Re-insert:

`40/18.5`

Simplify division:

`40/18.5=2.162162162162162162.....`

:Done