Question

ਸਮੀਕਰਣ x-y=2,x+y =-4 ਵਿੱਚ y ਦਾ ਮੁੱਲ ਵਿੱਚ y ਦਾ ਮੁੱਲ ਦੱਸੋ​

Answer 1

Solve by Substitution

Let's solve your system by substitution.

$x−y=2;x+y=−4$

Step: Solvex−y=2for x:

$→x−y=2$

$→x−y+y=2+y$(Add y to both sides)

$→x=y+2$

Step: Substitutey+2 for x in x+y=−4:

$→x+y=−4$

$→y+2+y=−4$

$→2y+2=−4$(Simplify both sides of the equation)

$→2y+2+−2=−4+−2$(Add -2 to both sides)

$→2y=−6$

$→2y 2=−62$

(Divide both sides by 2)

$→y=−3$

→Step: Substitute−3 for y in x $→=y+2x=y+2$

$→x=−3+2$

→x=−1(Simplify both sides of the equation)

Answer:

$→x=−1 \;and\; y=−3$