Question

solve it by cross multiplication method .. -2x+ y =1 and 3x -2y =1...


guys plzz provide me the ans as soon as possible ...​

Answer 1

Step-by-step explanation:

frist take the co efficient of all.then take last two terms and then take first two terms

Answer 2

hey ....

here is example of it....

Example 2 :

Solve the following system of equations using cross multiplication method :

3x + 4y = 24

20x - 11y = 47

Solution:

First we have to make the given equations in the form of a₁ x + b₁ y + c₁ = 0,a₂ x + b₂ y + c₂ = 0.

3 x + 4 y - 24 = 0 ----- (1)

20 x - 11 y - 47 = 0 ----- (2)

x/(-188-264) = y/(-480 -(-141)) = 1/(-33-80)

x/(-452) = y/(-480+141)) = 1/(-33-80)

x/(-452) = y/(-339) = 1/(-113)

x/(-452) = 1/(-113)

x = (-452)/(-113)

x = 4

y/(-339) = 1/(-113)

y = (-339)/(-113)

y = 3

Therefore solution is (4,3).

Verification:

Now let us apply the answer that we got in the first or second equation to check whether we got correct answer or not.

3 x + 4 y = 24

3(4) + 4(3) = 24

12 + 12 = 24

24 = 24