Question

Solve: 0.13x+0.4(x-1)=0.01(4x-4)

Answer 1

start with
\[13x+40(x-1)=4x-4\]

Answer 2

i.e. move decimal point over to place, aka multiply by 100
then solve as usual

Answer 3

think you get
\[x=\frac{36}{49}\]