Question

Need steps to 1/r+s=1/t than s=

Answer 1

`\huge{\boxed{s=t-r}}`

Explanation:

if

`(1)/(r+s)=(1)/(t)\qquad\text{cross multiply}\\\\(1)(t)=(1)(r+s)\\\\t=r+s\qquad\text{subtract}\ r\ \text{from both sides}\\\\t-r=r-r+s\\\\t-r=s\to\boxed{s=t-r}`

Answer 2

s = 1/t - 1/r

Explanation:

1/r+s=1/t

Subtract 1/r from each side

1/r - 1/r+s=1/t- 1/r

s = 1/t - 1/r