TY  - BOOK
AU  - King, Julie
AU  - Rasmussen, Peter
TI  - Key to Algebra : Adding and subtracting rational expressions 
SN  - 1559530073
U1  - 512 KIN 
PY  - 1990///
CY  - California
PB  - Key curriculum press
KW  - Algebra
N1  - Adding fractions with a common denominator --The opposite of a fraction --Subtracting fractions with a common denominator --Adding and subtracting fractions with different denominator --Combining integers and rational expressions  --More Adding and subtracting fractions with different denominator  --Least common denominators --Using common denominators to solve equations --Proportions --Ratio problems --Percent problems --Time Problems --Problems about rational numbers --Written work --Practice test
ER  -