Question

Sindhu successfully solved the system of equations 3x+y=9
and −2x−y=−7
. Which of these statements could correctly describe what she did?
A
She added the two equations together to solve for x, and then she substituted the value of x back into one of the equations and solved for y, getting x = 2 and y = 3.

B
She added the two equations together to solve for x, and then she substituted the value of x back into one of the equations and solved for y, getting x = 3 and y = 2.

C
She added the two equations together to solve for y, and then she substituted the value of y back into one of the equations and solved for x, getting x = 2 and y = 3.

D
She added the two equations together to solve for y, and then she substituted the value of y back into one of the equations and solved for x, getting x = 3 and y = 2.

Answer 1

please write here your idea about these statements ,we not can give you the correct answer(s) ,just help you to get the right way how can get the correct answer(s)

Answer 2

wild

Answer 3

^^