Question

i) If x+y=12 and y=-5 then x = ?​

Answer 1

Given Equation

• x + y = 12

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Given value

• Value of y is -5.

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To find

• Value of x.

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Solution

• Put the value of y in the given equation.

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→ x + y = 12

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→ x + (-5) = 12

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→ x - 5 = 12

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→ x = 12 + 5

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→ x = 17

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Hence,

• Value of x is 17.

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Answer 2

Given,

• x+y=12
• y=-5

To find,

• We have to find the value of x.

Solution,

If x+y=12 and y=-5 then x =17.

We can simply find the value of x when the value of y = -5 is given in the equation x+y = 12.

We can simply substitute the value of y = -5 in the given equation to obtain the value of x.

                           $x +y = 12$

                           $x + (-5) = 12$

                           $x-5 = 12$

                                 $x = 12+5$

                                 $x = 17$

Hence, if x+y=12 and y=-5 then x =17.