This is a Systems of Equations by Substitution Task Cards Activity that includes a paper version and a self-checking google sheets version. It comes with a work page and an answer key. The printable option include a black and white version as well

There are 20 systems of equations to solve. Questions 1-17 involve solving the system and finding the solution. Questions 18-20 involve finding the value of an expression (2x, -3y, y-2x) based on the solution to the given system.

Some questions include two equations in standard form. Some have one equations in slope-intercept form and the other in standard form. A couple have one variable already solved for and the other equation in standard form. 1 question has both equations in slope-intercept form.