Question

SWD
(3) 2x - 3y = 9; 2x + y = 13​

Answer 1

Answer:

using substitution method X= 6. , Y = 1

Step-by-step explanation:

2x - 3y = 9

=> x = 9+3y / 2 ---------- (1)

equation 2

2x + y = 13 -----------(2)

putting (1) in (2)

2* 9+3y/2 + y = 13

2 gets cancelled

9+3y +y = 13

4y = 4

y= 1 ---------(3)

putting (3) in (1)

x = (9 + 3)/2

X = 6

Answer 2

Answer:

2x – 3y = 9 .....(I)

2x + y = 13 .....(II)

Subtracting (II) from (I) we get

– 3y − y = 9 − 13

⇒−4y=−4⇒y=1

Putting this value in (I) we get

2x−3(1)=9⇒2x=9+3=12⇒x=122=6

Thus, (x, y) = (6, 1)