Algebra homework

Question

Correctly identify the first step in solving the system of equations by using the elimination method given the following equations: 5x+y=5 10x+3y=20

A. Multiply the first equation by 4: 4(5x+y=5)

B. Multiply the first equation by 2: 2(5x+y=5)

C. Multiply the first equation by -1: -1(10x+3y=20)

Answer 1

B

multiply 1st equation by 2 to eliminate x when you then subtract the two equations