How do you solve

-3 (1+6r) = 14-r

r = (-1)

Step-by-step explanation:

Firstly simplify the brackets,

; - 3 (1 + 6r) = - 3 - 18r

then substitute on the bracket with the simplified form,

; - 3 - 18r = 14 - r

then move the values with (r) to one side and the other ones without (r) to the other side

; - 3 - 14 = 18r - r

; - 17 = 17r

then divide both sides by 17,

; - 1 = r

Hence ... r = - 1