Question

Which of the following would not be helpful in solving the
system : { 2x + 5 y = – 11
{x- y = 5
A Replace x in the first equation with y + 5.
B Replace y in the first equation with x + 5.
C Multiply the second equation by 5 and add it to the first equation.
D Multiply the second equation

Answer 1

B will not be helpful because correct way should be Replace y in the first equation with x - 5.