Question

HELP HELP HELP PLSSSSS !!!

Wapi simplified an expression. His work is shown below.

In which step did Wapi make his first mistake?

Answer 1

Answer:

step 3

Step-by-step explanation:

The complete question in the attached figure

we have

$7( 8.5-1.5) +8 : 2$

we know that

Applying PEMDAS

P  ----> Parentheses first

E  -----> Exponents (Powers and Square Roots, etc.)

MD  ----> Multiplication and Division (left-to-right)

AS  ----> Addition and Subtraction (left-to-right)

step 1

Parentheses first

$7( 7) +8 : 2$

step 2

Multiplication (left-to-right)

$49 +8 : 2$

step 3

Division

$49 +4$

step 4

Addition

$53$

therefore

The step 3 is the first mistake

Answer 2

Answer:

nothing

Step-by-step explanation: