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QoTD 218: You're in SPAAAAACE now. What gives?

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Forum Oji-san
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QoTD 219: 3x-71 =-2(5x+1). Can you find the value of x?
3x - 71 = -2(5x + 1) / distribute the right side
3x - 71 = -10x - 2 / add 2 to both sides to eliminate the -2 on the right
3x - 69 = -10x / subtract 3x from both sides to get the variable isolated on one side of the equation
-69 = -13x / multiply both sides by -1 to eliminate the negative signs
69 = 13x / divide both sides by 13 to remove the coefficient of the variable
69/13 = x
 

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