Question

Write three solutions for the equation 3x + y =12. Also check whether (3, 4) is a solution or not.

Answer 1

(3,4) is not a solution for that equation
since 3(3)+4 is not equal to 12
let take x =1 and solve then y=9 we get
in the same way take x as 2,3,4,5etc
you get the solutions for the late equation

Answer 2

Answer:

3x + y = 12

3x = 12 - y

x = 12 - y ÷ 3

x = 4 - y

y + x = 4

so we can't assume x and y as 2 and 2 . because when it is 2 then it assume same variable but it is x and y , different variable .

so we can assume 1 and 3 . let see

3x + y = 12

3×3+1=12

(3,4) is not a solution for that equation

since 3(3)+4 is not equal to 12....

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