The values of and from the given three equations and increase is:

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answer is A.

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Detailed Solution

Concept: The above question is an example of a system of linear equations. They can be easily resolved with specific steps. You can see that there are three variables

. Therefore, you need to remove one variable from both. This leaves us with two linear equations with two variables. In this way, these equations can be solved more easily and the values of

can be calculated more easily.
You get three equations
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It's easy to see that each variable is a power of one. Therefore, these equations are simultaneous equations. Obviously, simply adding or subtracting these equations does not solve the value of each variable. The approach we take is to take two pairs from the above three equations and remove one variable from each. Attempts to remove the variable z using equations 1 and 2. Therefore, subtract

Again, we use expressions 2 and 3 to try to remove the variable z. Therefore, add

(2) and (3)
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You now have a system of equations for the two variables (4) and (5) . These equations can be easily solved by deleting one variable
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Therefore,

And in Equation 1
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The values of the variables

and

are all

Hence, the answer is option 1.

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