WAEC - Mathematics (2005 - No. 22)
Solve the equation \(\frac{2y-1}{3} - \frac{3y-1}{4} = 1\)
-8
-13
13
19
Обяснение
\(\frac{4(2y-1)-3(3y-1)}{12}=12 \Rightarrow 8y - 4 - 9y + 3 = 12 \\
\Rightarrow -y-1=12\Rightarrow -y=13\Rightarrow y=-13\)
\Rightarrow -y-1=12\Rightarrow -y=13\Rightarrow y=-13\)