Section 3.6 Solving Decimal Equations Mr. Beltz & Mr. Sparks Goal: Find exact and approximate solutions of equations that contain decimals. Approximate: Near or close (estimate) EX. $1.95 approx. $2.00 Basics Distribute on Both Sides First! Simply the expression (combine like terms) Goal: Get the variable to the left side Solve the Equation using Inverse Relationships Remember: You always want to solve for the Variable, “X = ?” -38x – 39 = 118 -38x + -39 = 118 +39 +39 -38x = 157 -38 -38 X = -4.13 Change Sub --> + Simply the Equation Do the Inverse of Addition [subtraction] The Inverse of Multiplication is Division 24x + 43 = 66 -43 -43 Change Sub --> + Simply the Equation 24x = 23 24 24 X = 0.96 Do the Inverse of Addition [subtraction] The Inverse of Multiplication is Division Practice P. 163 # 2-3 Show All work USE YOUR NOTES AS A GUIDE Practice P. 163 # 2-3 # 2: -1.40 #3: -1.12 Independent Practice P. 164-165 #’s 4-8 SHOW YOUR WORK

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# Lesson 3.6 Solving Decimal Equations ppt