2x - 14 = -2, adding 14 to each side gives 2x = 14 - 2 = 12, dividing each side by 2 gives x = 12/2 Thus x = 6
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What is the solution set of 2x2 + x = 15
'x' must be zero, so the solution set is [ 0 ].
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The solution: x = 6/7 and x = -1
x=4 or x=-4