# Solving Equations Medina1 With Decimal & Fractions.

## Presentation on theme: "Solving Equations Medina1 With Decimal & Fractions."— 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 Medina3 123456789101112 1123456789101112 224681012141618202224 3369121518212427303336 44812162024283236404448 551015202530354045505560 661218243036424854606672 771421283542495663707784 881624324048566472808896 9918273645546372819099108 10 2030405060708090100110120 11 2233445566778899110121132 12 24364860728496108120132144 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: