14 Rational Equations - practice PDF

Preview

Summary

practice...

Description

Rational Equations When solving rational equations, it is a good idea to first list the domain of the variable. This will help in determining whether the value(s) we get for the variable truly are solutions. To solve a rational equation, clear the equation of fractions by multiplying both sides by the least common multiple of the denominators. However, if we are given a proportion, it will be faster just to cross multiply. Examples: Solve. 3 1  3x 1 1) 4

1) ____________

x 6  5 2) x  4

2) ____________

6 5x  5x  6 3) 5x  6

3) ____________

x x  3 20 4) 4

4) ____________

4 3  1 z 5) z

5) ____________

Examples: Solve each equation for the specified variable. C T 1) K

2)

L 

M NP

1 1 1   3) a b c

for K

1) ____________

for N

2) ____________

for b

3) ____________...