Solving Equations Adding and Subtracting Mixed Review Common Denominators

Which value of t makes the statement true?
18 + t = 50

• 29

• 32

• 52

• 68

x - 5.5 = 13.53

• x = 8.03

• x = - 8.03

• x = - 19.03

• x = 19.03

Solve and simplify to lowest terms.

• a

• b

• c

• d

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators

• add the denominators

• find a common denominator

• find a common numerator

Find Lowest Common Denominator & solve
1     5/7  +   14    1/2

• 15  1/14

• 15  6/21

• 15  17/21

• 15  17/14

Find Lowest Common Denominator & solve
1   3/7      +       7   5/11 =

• 8   68/77

• 8   68/107

• 8   10/77

• 8    8/18

Find Lowest Common Denominator & solve
1    1/3   +    4    1/4 =

• 5    7/12

• 5    2/24

• 5    2/12

• 5    7/24

Subtraction:
Find Lowest Common Denominator & solve
8    5/7    -    7    2/3 = 

•   3/4

•  1/21

•    1/24 

•   3/24