Algebra Math Help

Algebra 1 help using the substitution method?

hola I do not know how to do this problem in my homework and I need the help of the instructions are "Solve the following system of equations by substitution (Algebra) show all work" Y = 2X-Y = 2X – 4

whether = 2x =- 2x-4 And so then u kno And you and has values. so u just plug for tat And 2x =- 2x-4 and then link or as terms yu get 4x =- 4 by adding 2x to both sides. then divide by 4 u on both sides for tat or get x by itself, x =- 1, then you have ur answer

Int Algebra: Solving a System by Substitution