Algebraic Fraction 2

Mathematics SSS 2 Second Term

WEEK 6

Algebraic Fraction 2

Performance Objectives

Students should be able to;

1. Substitute fractions.
2. Solve simultaneously equation involving fractions.
3. Determine the undefined value of a fractions.

Substitution in fractions

Content

Example 1

Given that x:y = 9:4, evaluate 8x-3yx- 34y

If x:y = 9:4, then xy = 94

Divide the numerator and denominator of 8x-3yx- 34y  by y

8x - 3yx -  34y = 8  xy - 3xy  -  34

Substitute 94 for xy in the expression.

Value of expression = 8  x  94 -394 - 34 = 18 -311…