Answer: x = 12
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Work Shown:
3 = x/6 + 1 .... original equation
3-1 = x/6+1 -1 .... subtract 1 from both sides (see note 1 below)
2 = x/6 .... combine like terms
x/6 = 2 .... symmetric property (see note 2)
6*(x/6) = 6*2 .... multiply both sides by 6 (see note 3)
x = 12 .... multiply and simplify
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note 1: we're using the subtraction property of equality. This is the same as adding -1 to both sides. This undoes the "+1" on the right side.
note 2: The symmetric property is if A = B, then B = A. It doesn't matter the order of the left and right sides of an equation.
note 3: Multiplying both sides by 6 will undo the "divide by 6" operation happening to x
