Question

X + 9y = 38 3x + 7 = 14​

Answer 1

x = -7, y = 5

Explanation:

a) x + 9y = 38, b) 3x + 7y = 14

From a)

x = 38 - 9y ---- (Equation 1)

From b)

{3*(38 - 9y)} + 7y = 14 ----- (From equation 1)

114 - 27y + 7y -14 = 0

100 - 20y = 0

20y = 100

y = 5

From a)

x + (9*5) = 38 (substituting the value of y = 5)

x + 45 = 38

x = 38 - 45

x = -7

Hope, this will help