Question

3x+4y=11,4x+3y=10 solution​

Answer 1

Answer:

3x+4y=11 ..... (1)

4x+3y=10 ..... (2)

(1) × 3 ==> 9x + 12y = 33 ..... (3)

(2) × 4 ==> 16x + 12y = 40 ..... (4)

(4) - (3) ==> 7x = 7

==> x = 1

Putting x = 1 in (1), we get

3 + 4y = 11

4y = 11 - 3 = 8

==> y = 2

•°• x = 1 & y = 2

Answer 2

Answer:

3x+4y= 11‐---------(1) ×3

4x+3y=10----------(2)×4

9x +12x=33

16x+12x=40

- - -

___________

-7x = -7

$x = \frac{7}{</strong><strong>7</strong><strong>}$

putting the value of x in 1 we get

9+12y=11

2y = 11-9

2y=2

y =1