# How do you solve .13x+57.96=.08x+63.96?

May 10, 2018

By subtracting, you have that

$\left(.13 x + 57.96\right) - \left(.08 x + 57.96\right) = \left(.08 x + 63.96\right) - \left(.08 x + 57.96\right)$

Hence we compute:
$.13 x - .08 x = .05 x$
$63.96 - 57.96 = 6$

So we have that

$.05 x = 6$, so since $0.05 \cdot 20 = 1$, by multiplying we have that

$x = 20 \cdot 6 = 180$