Differentiated simultaneous equations worksheets (unlimited questions!)

Save yourself lots of time by using this differentiated set of worksheets that automatically works out the answer, with an unlimited supply of questions on simultaneous equations.
8 sheets with different types of questions. The 3 levels of difficulty are:

• solve simultaneous equations where the coefficient of x OR y is 1. E.g.
10x + y = 4
8x + y = 25
There are 4 different easy sheets – all adding, all subtracting, one add one subtract and one where x and y could be negative.

• solve simultaneous equations where the coefficient of x OR y is a factor of the other x or y E.g.
4y + 7x = 117
2y + 2x = 40
There are 2 medium sheets – one with negative answers, one without
• solve simultaneous equations where x and y are random integers or decimals E.g.
4y - 3x = 34.5
6y + 5x = 56.5
There are 2 hard sheets – one with negative answers, one without

Features:
-Print the questions off
-Print the answers off
-Refresh the questions so you get any entirely new set of questions and answers (unlimited questions!)

You will need to enable Macros for this to work (there should be a yellow bar that pops up when you open a file that you can enable macros from)

See here if you need any additional help with this:
https://support.office.com/en-us/article/Enable-or-disable-macros-in-Office-files-12b036fd-d140-4e74-b45e-16fed1a7e5c6

Please rate and review, let me know if you want any particular topic done in this format.