What is the value of x? Answer options: 15, 35, 25, 30
2 answers:
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Answer: 9
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
Keeping on mind that:
(-)(-)=+
(+)(+)=+
(-)(+)=-
You can distribute the signs as following:
Now, you can add all the numbers shown above. Therefore, you obtain the following sum: