Solving Equations Medina1 With Decimal & Fractions.

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Presentation transcript:

Solving Equations Medina1 With Decimal & Fractions

Steps to Solve Fractions Equations Medina2 2. Undo addition or subtraction You may not have to do all the steps to solve the equation “You know you are done solving when there is a positive 1 in front of the variable.” 3. Undo multiplication or division 1. Multiply the WHOLE EQUATION by the least common denominator

Fractions – Finding the Least Common Denominator Medina LCM=12 LCM=8

Solving Equations with Algorithm Medina4 To Solve: Original problem Multiply the whole equation by 4 Check answer What is the common denominator? Add 3 to both sides Divide both sides by 4 4

Solving Equations with Algorithm Medina5 Check:

Solving Equations with Algorithm Medina6 To Solve: Original problem Check answer Multiply the whole equation by 4 Divide both sides by 3 What is the common denominator? 4

Solving Equations with Algorithm Medina7 Check:

Steps to Solve Decimal Equations Medina8  Multiplying the whole equation by a power of 10 that would make decimals into integers Powers of 10  Then solve the new equation using the 2 steps.

Solving Equations with Algorithm Medina9 To Solve: Original problem Check answer Multiply the whole equation by 10 Divide both sides by 10 What power of 10 would make both decimals whole numbers? 10 Subtract 56 to both sides

Solving Equations with Algorithm Medina10 Check: