Solve : 1/8c - 1/40 + 1/2c = 1/2 + c?

Question

please respond quickly!!

Answer 1

1/8c - 1/40 + 1/2c = 1/2 + c
5/40c - 1/40 + 20/40c = 20/40 + 40/40c
5c - 1 + 20c = 20 + 40c
-15c = 21
c = -7/5

Answer 2

I'm guessing that you intend the c's to be in the numerator, not the denominator...

1/8 c - 1/40 + 1/2 c = 1/2 + c
1/8 c + 1/2 c - c = 1/2 + 1/40
1/8 c + 4/8 c - 8/8 c = 20 / 40 + 1 / 40
-3/8 c = 21 / 40
c = -( 21 / 40 ) ( 8 / 3 )
c = - ( 21 / 3 ) ( 8 / 40 )
c = - ( 7 / 5 )