Question

Solve the following pair of linear equations 4x+ 6/y=15 ,6x-8y/=14​

Answer 1

Answer:

X=3

Y=2

Step-by-step explanation:

Multiply 4x+6/y=15by3 (equ 1)

Multiply 3x- 4/y =7 by 4 (equ2)

Subtract equ 1 and 2

Answer 2

x=3, y=2

Step-by-step explanation:

Solve the equation,

$4x+\frac{6}{y}=15 ....(i)$

multiply equation (i) by 4

$16x+\frac{24}{y}=60 ....(ii)$

$6x-\frac{8}{y}=14 ....(iii)$

multiply equation (iii) by 3

$18x-\frac{24}{y}=42 ....(iv)$

add equation (ii) and (iv)

$16x+\frac{24}{y}+18x-\frac{24}{y}=60+42$

$16x+18x=60+42$

$34x=102$

$x=3$

Put the value of x in equation (i)

$4\times 3+\frac{6}{y}=15$

$12+\frac{6}{y}=15$

$\frac{6}{y}=15-12$

$\frac{6}{y}=3$

$y=2$