Answer:
The mistake she made was ; She didn't change the sign when subtracting -3/4 from both sides
She wrote 5/4+3/4 instead of 5/4-3/4
Step-by-step explanation:
Correct solution:

Subtract-3/4 from both sides

Simplify

If they proportional, it implies
(x+2)/(x-1) = 8/10
Or 10x +20 = 8x-8
Or 2x = -28 or x = -14
Answer: 1.6
<u>Order the numbers</u>
5,6,6,8,10
<u>Add</u>
5+6+6+8+10=35
<u>Divide</u>
35÷5=7
Mean: 7
Sum divided by the count.
Final Answer: 1.6
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