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  • $\begingroup$ Yup 1x2=3x5 and 2x2=4x10 are minimal. $\endgroup$ Commented Jun 24, 2018 at 7:44
  • $\begingroup$ 1x3=7x10, 2x3=10x13 both minimal $\endgroup$ Commented Jun 24, 2018 at 10:57
  • $\begingroup$ Yup 1x4=7x10 is minimal. All done! $\endgroup$ Commented Jun 26, 2018 at 9:28