104966982 104966982 08-11-2022 Mathematics Answered PLEASE HELP Use the substitution method to solve the sysytem of linear equations. Enter your answer as an ordered pair. There are four different question with these equations 1. Y=2x+5 X=1 2. Y=2x+1 Y=6x-1 3. Y=2(x-7) X+y=4 4. 3x-y=6 X+3y=12