Question

How to solve a equation which has two variables in mathematics

Answer 1

Answer:

let suppose that there are two variable such as x and y

now let the 2x + y = 12. (1)

and 3x - y = 3. (2)

now add the equation 1 nd 2

2x + y = 12

3x - y = 3

5x. =15

x =15

5

x = 3

put x =3 in equation 1st

2(2) * y = 12

4 * y = 12

y= 12 - 4 =8

y=8

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