Math
posted by Rachel .
a+s=1970
8a+5s=12220
Please help me solve the system of equation and show your work thanks

8a+5s=12220
a+s=1970
Solve by elimination (of s)
Multiply the second equation by 5 and subtract from the first:
8a5a + 5s5s = 122205*1970
3a = 2370
a=790
Solve for s using a=790