Question

8(1 - 5x) = 13

Answer 1

Start by distributing 8.

Answer 2

Like @geerky42 said

so,
8-40x = 13
-, move the 8 to the right hand side to get -8
so, it will be
-40x = 13-5
therefore,
-40x = 8
so,
x = \[\frac{ -40 }{ 8 }\]
x= -5