Question

solve by cross multiplication method 7x-3y=5 and x-y=2​​

Answer 1

Step-by-step explanation:

7x-3y=5 ------(1)

x-y=2 ------(2)

multiplying equation (2) by 3

3x-3y=5 --------(3)

subtracting equations 1 and 3

7x-3y=5

3x-3y=2

- + -

-----------

4x = 3

x=4/3

put 4/3 in equation (2)

x-y=27

4/3 - y = 27

y = 27 - 4/3

y = 81-4/3

y = 77/3

y = 25.62

(x,y) = (4/3,25.62) are the solution of equation.