3x + 2y = A 5x + y = B Eliminating the variable y from the system of equations results in - 7x =

A) A - 2B

B) 2B - A

C) A + 2B

Question

Mathematics

Talia Mcintosh

15 May, 20:17

3x + 2y = A 5x + y = B Eliminating the variable y from the system of equations results in - 7x =

A) A - 2B

B) 2B - A

C) A + 2B

+2

Answers (1)

Know the Answer?

Lindsay Lloyd · Answer 1

The answer is A

You would multiply the second equation by - 2 to clear the 'y'.

This leaves - 10x = 2B and 3x = A

When combining these we get - 7x = A - 2B

3x + 2y = A 5x + y = B Eliminating the variable y from the system of equations results in - 7x =A) A - 2BB) 2B - AC) A + 2B

3x + 2y = A 5x + y = B Eliminating the variable y from the system of equations results in - 7x =

A) A - 2B

B) 2B - A

C) A + 2B