give the first step you'll use to separate the variable then solve the equations: a)x-1=0 b) x+1=0
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a) x - 1 = 0
x = 0 + 1
x = 1
b) x + 1 = 0
x = 0 - 1
x = -1
x = 0 + 1
x = 1
b) x + 1 = 0
x = 0 - 1
x = -1
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