3x - 1 = 27
So 3x = 28 and x = 28/3 = 91/3
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If 3X-27= 0 then X=9
24-3x=-27-3x=-24-273x=24+273x=51x=17
3x=81 3x/3=81/3x=27
If 3x = 81 then x = 27 and 27 cubed = 19683
Given 3x = 1/27 divide both sides by 3: 3x ÷ 3 = 1/27 ÷ 3 → x = 1/27 ÷ 3/1 → x = 1/27 × 1/3 → x = 1/(27×3) → x = 1/81 Dividing by 3 is the same as multiplying by the reciprocal of 3, namely 1/3.