The first equation is 5a - 14 = 80 + 4
5a - 14 = 8a+4
collect the like terms
5a - 14 = 8a + 4
5a - 8a = 4 + 14
a(5-8) = 18
a(-3) = 18
-3a = 18
to find a divide both sides by -3
-3a/-3 = 18/-3
a = 18/-3
a = -6
second equation
9c - 3c = 48
c is common, so we can factorize out c
c(9 - 3) = 48
c(6) = 48
6c = 48
divide both sides by 6
6c / 6 = 48/6
c = 48/6
c = 8
the answer is a = -6 and c = 6
