Question

Elimination method
4x + 3y = 3; 7x-5y
= -46​

Answer 1

Answer:

hlo

Step-by-step explanation:

it can be solved by other methods also.

Answer 2

Answer:

$x=-3$  ,  $y=5$

Step-by-step explanation:

The Given equations:

$4x+3y=3$ ...........(i)

$7x-5y=-46$ ...........(ii)

After multiplying with 5, the (i)no equation will be,

$20x+15y=15$ ...........(iii)

After multiplying with 3, the (ii)no equation will be,

$21x -15y=-138$ ...........(iv)

Now, Let's add the (iii)no equation with the (iv)no equation.

   $20x+15y=15$

   $21x -15y=-138$

-------------------------------

             $41x=-123$

           Or, $x=\frac{-123}{41}$

              ∴ $x=-3$

Insert the value of $x$ in the (i)no equation,

    $4(-3)+3y=3$

Or, $3y-12=3$

Or, $3y=3+12$

Or, $3y=15$

Or, $y=\frac{15}{3}$

∴ $y=5$

Answer: $x=-3$ & $y=5$.

(N.B: Here I've cut off all the value of $y$ at the beginning and found the value of $x$ at first. You can do the opposite. It means you can cut off all the value of $x$  at the beginning and find the value of $y$ at first.)

Hope you understand the method of solving this type of math.

By- Md. Mominur Islam Mahim.