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Aim: How do we formally solve two-step equations? 4x ̶ 5 = 23 +5 +5 Steps: 1) Eliminate “Loose Stuff” (undo addition or subtraction) Remember: Whatever you do to one side of the 4x = 28 equal sign, must do to the other 2) you Undo multiplication or division 4 4 Remember: Whatever you do to one side of the you must do to the other x = 7equal sign, 3) Write Solution Check: 4x ̶ 5 = 23 4 • 7 ̶ 5 = 23 28 ̶ 5 = 23 23 = 23 Steps: 1) Rewrite equation 2) Substitute solution in for variable 3) Simplify