Equation 1: Ax+By=C equation 2: Dx+Ey=F which of the following could replace equation 1 and still have the same solution? Select all that apply.

A. A multiple of the equation 1.

B. The sum of Equation 1 and Equation 2.

C. An equation that replaces only the coefficient of x with the sum of the coefficient of x in equation 1 and equation 2.

D. The sum of a multiple of Equation 1 and Equation 2.