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