Question

solve x and y ,x+y=5 and 2x+3y=4​

Answer 1

Answer:

x = 11 and y = -6

Step-by-step explanation:

Given:----------------

x+y=5 ----------1

2x+3y=4 ----------2

On multiplying eq.1 with '2', we have,

2(x+y=5) = 2x+2y=10 ----------3

On subtracting eq. 2 from eq. 3 we get,

2x+2y = 10

2x+3y = 4

- - -

0x-y = 6

-y = 6

y = -6.

On substituting y value in eq. 1, we get,

x+(-6) = 5

x-6 = 5

x = 5+6

x = 11.

Therefore, the value of x is 11 and the value of y is -6.

Hope it helps you.

Good Luck.

Answer 2

Answer:

x= 11 , y = -6

Step-by-step explanation:

2x + 3y = 4

x + y = 5 ( multipy by one of the above nmbr as I hv multipied by 2)

by elimination method

then

2x + 3y = 4

2x + 2y = 10 ( now chng the sign)

- - = -

___________

0 + y = -6 ( here we get our y)

____________

now ,

substuting answer in 2nd equation

x -6 = 5

x= 5+ 6

x= 11