Question:
Solve each of the following in equations and represent the solution set on the number line.
$\frac{5 x-8}{3} \geq \frac{4 x-7}{2}$, where $x \in \mathbf{R}$
Solution:
Given:
$\frac{5 x-8}{3} \geq \frac{4 x-7}{2}$, where $x \in R$
$(5 x-8) \cdot(2) \geq(4 x-7) \cdot(3)$
$10 x-16 \geq 12 x-21$
Now, adding 16 to both the sides
$10 x-16+16 \geq 12 x-21+16$
$10 x \geq 12 x-5$
Now, subtracting 12x from both the sides of the above equation
$10 x-12 x \geq 12 x-5-12 x$
$-2 x \geq-5$
Now, multiplying by $-1$ on both the sides of above equation
$(-2 x)(-1) \geq(-5)(-1)$
$2 x \leq 5$ (inequality reversed)
Therefore,
$x \leq \frac{5}{2}$