Question

To solve the simultaneous equations 4x + 8y = 13 and 9x y = 54 by eliminating y, which of the following operations will be required to be done before adding the two equations?
a) Multiply first equation by 9 and second by 4.
b) Multiply first equation by 4 and second by 9.
c) Multiply first equation by 8
d) Multiply second equation by 8.​

Answer 1

Answer:

To solve the simultaneous equations 4x + 8y = 13 and 9x y = 54 by eliminating y, which of the following operations will be required to be done before adding the two equations?

a) Multiply first equation by 9 and second by 4.

b) Multiply first equation by 4 and second by 9.

c) Multiply first equation by 8

d) Multiply second equation by 8.