Simplify 434 3 4 - 614

Assessment: JAMB UTME - Mathematics - 2009 Subject: General Mathematics

Question 1 Report

Simplify 4 $\frac{3}{4}$ - 6 $\frac{1}{4}$

-7

\frac{7}{8}

\frac{- 2}{7}

\frac{- 10}{21}

\frac{10}{21}

Answer Details

4 $\frac{3}{4}$ - 6 $\frac{1}{4}$
$\frac{19}{4}$ - $\frac{25}{4}$ ............(A)
$\frac{21}{5}$ - $\frac{5}{4}$ .............(B)
Now work out the value of A and the value of B and then find the value $\frac{A}{B}$
A = $\frac{19}{4}$ - $\frac{25}{4}$
= $\frac{- 6}{4}$
B = $\frac{21}{5}$ x $\frac{5}{20}$
= $\frac{105}{20}$
= $\frac{21}{4}$
But then $\frac{A}{B}$ = $\frac{- 6}{4}$
$\frac{21}{4}$ = $\frac{- 6}{4}$ $\div$ $\frac{21}{4}$
= $\frac{- 6}{4}$ x $\frac{4}{21}$
= $\frac{- 24}{84}$
= $\frac{- 2}{7}$

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