isaiahb30 isaiahb30 11-02-2019 Mathematics contestada PLEASE HELP ASAP!!! 35 POINTS AND BRAINLIEST FOR FASTEST AND BEST ANSWER!!! For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation? −x + 2y = −6 3x + y = 8 −2y + 6 2y − 6 2y + 6 −2y − 6