Answer:
450
Step-by-step explanation:
hello,
the equation is
[tex]\dfrac{1}{5}x-\dfrac{12}{3}y=30[/tex]
we replace y by 15 it comes
[tex]\dfrac{1}{5}x-\dfrac{12}{3}15=30\\<=>\dfrac{1}{5}x-12*5=30\\<=>\dfrac{1}{5}x=30+60=90\\<=> x = 5*90=450[/tex]
hope this helps
