Question

If 2x=12 for 3x+2y=23, then find the value of y

Answer 1

nakabuti mo sa ibang Tao

Answer 2

Answer:

let us your first

Step-by-step explanation:

let us assume your first equation as =>

2x + 0y = 12. ,; (cuz, it still equals to 2x = 12 as 0y will become "0" ;

2nd equation as ==> 3x + 2y = 23

So by using Elimination Method,...

we multiply eq 1 to 3 (eq1 * 3)

and eq 2 to 2(eq2 *2)

means--- (2x + 0y = 12) * 3

and ( 3x + 2y = 23)* 2

we are doing this because we want to equal the coefficient of "x" in both equations.. now,

eq 1==> 6x + 0y = 36

as (2x *3) = 6x ; (0y * 3) = 0 ; (12 *3) = 36,,,

eq 2==> 6x + 4y = 46

as (3x *2)= 6x ; (2y*2)=4y ; (23*2)=46,,,,

now we simply substrate eq1 from eq2 .as,

(6x - 6x) + (4y - 0y) = (46 - 36)....

and answer will automatically comes in our way..

0 + 4y = 10 ==> 4y = 10

y = 10/4 ==> |y = 2.5|

now we simply put this value in equation 2 as..

6x + 4*(2.5) = 46

6x + 10 = 46

6x = 46 -10

6x = 36

x = 36/6

and yippee now you can do what's next :)

it's a secret <[ ° = ° ]>. x = 6

hence x = 6 and y = 2.5

enjoyyyyyyyyyy