Maria first made an error in step 3.
Maria can correct her error by multiplying 136.49 by 1 over 4 before subtracting 3.0625 from it.
Answer:
12
Step-by-step explanation:
8.x-13=3+4.x
8.x-13=7.x
x-13+8=7.x
x-5=7.x
x-x=7+5
x-x=12
x=12
Well, these are quite simple really, especially 1,2,3 and 4. If you read the questions carefully, you can understand it well. You don’t need to know the answer, you just need to understand
The question is an illustration of equivalent equations.
<em>There are 11 units in all</em>
The given parameters are:
<u>Sage</u>



<u>Tristan</u>



Andre has twice of what Sage has
So, the total unit is:

<em>Sage has 2 units</em>
<em>Tristan has 5 units</em>
<em />
Because, Andre has twice of what <em>Sage has,</em>
Andre's number of units would be 4
So, we have:


Hence, there are 11 units in all
Read more about equivalent equations at:
brainly.com/question/18720297