Fraction and Decimal Equations.notebook
September 07, 2016
FRACTION AND DECIMAL
EQUATIONS Critical Thinking Skill:
Explicitly assess information and draw conclusions
FRACTION AND DECIMAL EQUATIONS Warm Up: Solve the following equations.
1 1
3
1) a ­ a = 5
2
20
2) 0.8a + 0.21 = 0.4a + 0.7 Fraction and Decimal Equations.notebook
September 07, 2016
CLEAR THE FRACTIONS!
1
3
1 ex1 a ­ a = 2
5
20
Steps:
1) Find the LCD
2) Multiply EVERY term
by the LCD (even non­fractions)
*all fractions should be gone after this step
3) Solve the equation
2
5 1
7
ex 2 x ­ = x + 3
6
3
3
Fraction and Decimal Equations.notebook
September 07, 2016
CLEAR THE DECIMALS!
ex1 0.8a + 0.21 = 0.4a + 0.7 Steps:
1) Multiply EVERY term
by a power of 10 (even the non­decimals)
*10..moves 1 decimal place
*100 moves 2 decimal places
*1000 moves 3 decimal places
*all decimals should be gone after this step
2) Solve the equation
ex 2 0.42 ­ 0.03y = 3.33 ­ y
Fraction and Decimal Equations.notebook
September 07, 2016