Question

5q/2=15/4 Don't use cross multiplication​

Answer 1

$\frac{5q}{2} = \frac{15}{4}$

multiplying both sides by 4

then ,

$\frac{5q}{2} \times 4 = \frac{15}{4} \times 4$

10q = 15

$q = \frac{3}{2}$

I hope it helps you

follow me ❤️