Question

(4 Marka)
1) For simultaneous equation in x and y, if D, = 49. D. = 63 and D = 7. then what is the
value of x?
(A) 7
(B)-7
c) D-​

Answer 1

Hey dear,

● Answer -

(A) x = 7

● Explanation -

# Given -

D = 7

Dx = 49

Dy = -63

# Solution -

Value of x can be calculated by -

x = Dx / D

x = 49 / 7

x = 7

Value of y can be calculated by -

y = Dy / D

y = -63 / 7

y = -9