0.6 recurring as a percentage
x = 0.6666.... |multiply both sides by 1010x = 6.666...10x - x = 6.666... - 0.666...9x = 6 |divide both sides by 9x = 6/9x = 2/30.666... = 2/32/3 = 2/3 · 100% = 200/3% = 66 2/3 %