Question

a+s=150
45a+28.50s=4770
How do I solve this? help please!!!

Answer 1

a+s=150 ----> a=150-s replace this in the second equation and solve for s

Answer 2

follow @hoblos and then in ur long equation do: 45(150-s) +28.50s=4770.

Answer 3

you can use elimination method by first multiplying ist equation by 45:
45a + 45s = 6750
45a + 28.5s = 4770
subtract to eliminate a

Answer 4

consider

a= 150 - s substitute the value of a in the second eqn
45 (150- s) + 28.5s =4770
6750 - 45s + 28.5s=4770
-16.5s =-1980
s =120
substitute the value of c in any eqn
take a + s =150
a + 120=150
a =30
therefore a =30 and s=120

Answer 5

thanks a bunch