Question

x + y = 7 and 2x - y = 3 find x and y by substitution method

Please answer me fast with methods ​

Answer 1

Answer:

x + y = 7

⇒ x = 7 - y    ...........- 1

2x - y = 3

2(7 - y) - y = 3    (Substituting equation 1)

14 - 2y - y = 3

14 - 3y = 3

-3y = -11

y = $\frac{-11}{-3}$

y = $\frac{11}{3}$

x = 7 - y           (Eq 1)

x = 7 - $\frac{11}{3}$

x = $\frac{21 - 11}{3}$

x = $\frac{10}{3}$

Step-by-step explanation: