Question

Shau-uen solve the equation 18.5w+6.5w-2.8w=149.1 Her work is shown below

Step(1)
18.5w+6.5w-2.8w= 149.1^0
Step(2)
25w-2.8w= 149.1
Step(3)
-2.8w=5.964
Step(4)
W= -2.13
In which step did Shaun make her first error?

A. Step 1
B. Step 2
C. Step 3
D. Step 4

Answer 1

shaun made her first error at step 3 cause she was suppose to 2.8 from 25 and she should have gotten 22.2 instead of -2.8

Answer 2

Shaun makes her first error in STEP 1.

What is an equation?

The equation is the representation of the variables and numbers in a specific form with mathematical operations.

We have,

18.5w + 6.5w - 2.8w = 149.1

Now,

STEPS followed by Shaun;

Step(1)

18.5w+6.5w-2.8w= 149.1^0

In this step, Shaun makes mistake by putting zero degree to 149.1 which will make it equal to 1.

Step(2)

25w-2.8w= 149.1

There is no mistake.

Step(3)

-2.8w=5.964

In this step, Shaun was supposed to subtract the w variable terms, so he make mistakes.

Step(4)

W= -2.13

So, Shaun makes her first error in STEP 1 by putting zero degree to 149.1.

Learn more about the equation here:

https://brainly.com/question/2263981

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