Question

Which of these strategies would eliminate a variable in the system of equations?
−7x+2y=5
3x−5y=−5
​A. Add the equations.
B. Multiply the top equation by 555, multiply the bottom equation by 222, then add the equations.
C.Multiply the top equation by 333, multiply the bottom equation by 777, then add the equations.

Answer 1

Answer: (c)

Step-by-step explanation:

Multiplying the top equation by 333 and multiply the bottom equation by 777 and then adding will eliminate the variable 'x'.

This is because in both the equations, 'x' has differenent signs and also/

7 x 333 = 3 x 777 = 2331

Hope it helps you :)