Question

Solve Please
|4x-1|= 7

Answer 1

x = -1.5 or x = 4

Explanation:

`|4x-1|=7\iff4x-1=7\ \vee\ 4x-1=-7\qquad\text{add 1 to both sides}\\\\4x=8\ \vee\ 4x=-6\qquad\text{divide both sides by 4}\\\\x=2\ \vee\ x=-(6)/(4)\\\\x=2\ \vee\ x=-1.5`