Commutative property across multiplication for 2x10x7

The function show two sisters' savings account and the rate at which they plan to deposit money

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14