Question

In the coordinato form (x,y), the solution of
the pair of linear equations 3x + 5y - 21 and x -
ylis given by
A (-2,1)
B (3,-2)
c (2,3)
D (1,1)​

Answer 1

Answer:

C(2,3)

Step-by-step explanation:

3x + 5y = 21 ...(i) x – y = -1 ...(ii)

Multiplying (ii) by 3,

3x – 3y = -3 ...(iii)

Subtracting (iii) from (i), we get

8y = 24

y = 3

x = -1 + 3 = 2