Answer:
No, she made mistake from step 3, going to step 4
Step-by-step explanation:
See attachment for complete expression and Tisha's steps
Required
Is she correct?
The steps up to step 3 is correct.
However, going to step 4; she made a mistake
Her expression is:
Step 3: [tex]90 - 2 * 3[/tex]
The correct step is to multiply 2 by 3 (using BODMAS)
This will give:
[tex]90 - 6[/tex]
[tex]84[/tex]
But instead she evaluated the subtraction first, which is incorrect.
