Let's first retrace her steps
![- (4x - 5) + 2(x - 3) \\ - ((4 \times 1) - 5) + 2(1 - 3)](https://tex.z-dn.net/?f=%20-%20%284x%20-%205%29%20%20%2B%202%28x%20-%203%29%20%5C%5C%20%20-%20%28%284%20%5Ctimes%201%29%20-%205%29%20%2B%202%281%20-%203%29)
using PEMDAS we know that we first have to do the operations in parenthesis then multiply before we add or subtract so we have
![- (4 - 5) + 2(1 - 3) \\ - ( - 1) + 2( - 2) \\ 1 - 4 \\ - 3](https://tex.z-dn.net/?f=%20-%20%284%20-%205%29%20%2B%202%281%20-%203%29%20%5C%5C%20%20-%20%28%20-%201%29%20%2B%202%28%20-%202%29%20%5C%5C%201%20%20-%204%20%5C%5C%20%20-%203)
so far so good now lets check the other side
![- 2x - 5 \\ - 2( - 1) - 5 \\ 2 - 5 \\ - 3](https://tex.z-dn.net/?f=%20-%202x%20-%205%20%5C%5C%20%20-%202%28%20-%201%29%20-%205%20%5C%5C%202%20-%205%20%5C%5C%20%20-%203)
from this we can determine that all of her math is correct. However, to say that two expressions are equivalent you have to substitude the same number on both expressions and get the same answer. Since she did not do this, amd used x=1 on one expression and used x=-1 on th other her answer is incorrect.
Answer:
300 minutes -_-
Step-by-step explanation:
pls brainliest it would help so much thank you
An expression is a set of terms combined using the operations +, -, x or ÷, for example 4 x − 3 or 5 x 2 − 3 x y + 17 . An equation is a statement with an equals sign, which states that two expressions are equal in value, for example 4 b − 2 = 6
An equation is a mathematical statement that is made up of two expressions connected by an equal sign. For example, 3x – 5 = 16 is an equation. Solving this equation, we get the value of the variable x as x = 7.
50
6m-n
Let m = 9 and n = 4
when m = 5 and n = 38
N-6m6*9-4
Multiply first
54-4
Then subtract
50
To learn more about expression
visit : brainly.com/question/23968040
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Answer:
If you are looking for an equation, then it would be 25 < x.
Step-by-step explanation: