[tex]\frac{15x}{4} + \frac{5}{2} = \frac{7x}{2}[/tex]
⇒ [tex]\frac{(15x+10)}{4} = \frac{7x}{2}[/tex]
⇒30x + 20 = 28x
⇒20 = 28x - 30x = -2x
⇒x = -10
hope it helped.
