Question

How do you solve this system of equations: `3a + 5y = 30; 5a = 25`?

Answer 1

#5a = 25 => a = 5 => 3(a) + 5y = 30 => 3(5) + 5y = 30#

#=> 5y = 15 => y = 3 #
hope you find it helpful ;)