Question

For which system of equations would elimination be the simplest technique to choose?

Answer 1

A. y = 2x and x + 3y = 5
B. 4x + 3y = 6 and 3y = 5
C. x + y = 7 and x - y = 12
D. 3x - 2y = 8 and 4x - 5y = 20

Answer 2

A, simply replace y with 2x in the second equation and you can solve for x

Answer 3

C Because if you just add the equations, y will be eliminated.

Answer 4

@Lagrange That would be substitution.

Answer 5

though it said substitution ....

Answer 6

Thanks everyone! :)

Answer 7

C. x + y = 7 and x - y = 12