How do you solve 232.5=-77.5s?

Feb 29, 2016

s = -3

Explanation:

reverse the equation ( although not compulsory) to obtain.

$- 77.5 s = 323.5$

now divide both sides by -77.5

$\frac{\cancel{- 77.5} s}{\cancel{- 77.5}} = \frac{232.5}{-} 77.5 \Rightarrow s = - 3$

Feb 29, 2016

$s = 3$

Explanation:

Making the numbers easier: Multiply both sides by 10

$2325 = - 775 s$

To make s positive: multiply both sides by (-1)

$775 s = - 2325$

To 'get s on its own' divide both sides by 775

$\frac{775}{775} \times s = - \frac{2325}{775}$

But $\frac{775}{775} = 1$

$s = - \frac{2325}{775} = 3$