Question

solution of 5 x minus 3 y equal to 8 and 3 X + 5 y equal to minus 2 are options:-. (a) x=1, y=-1. (b) y=1, x=1 (c) x=-1, y=1. (d)x=-1, y=-1​

Answer 1

Answer:

Option a

Step-by-step explanation:

Answer 2

Answer:

(a) x = 1, y = -1

Step-by-step explanation:

3x+5y = -2

or, x = $\frac{-2-5y}{3}$ [equation (i)]

Now,

5x-3y = 8

or, 5×$\frac{-2-5y}{3}$-3y = 8

or, $\frac{-10-25y}{3}$-3y = 8

or, $\frac{-10-25y-9y}{3}$ = 8

or, -10-34y = 24

or, -34y = 34

or, y = $\frac{34}{-34}$

∴ y = -1

Substituting the value of y in equation (i),

∴ x = $\frac{-2-5.(-1)}{3}$

     = $\frac{-2+5}{3}$

     = 1