How to solve - 3z+1=7 step by step

-2

Step-by-step explanation:

-3z+1=7

-3z = 7-1

-3z=6 / : (-3)

z = - 2

z=-2

Step-by-step explanation:

We must cancel out the one by subtracting it by 7 which gives

= - 3z=6

Now we divide by 3 which gives

=-z=2

Now it is minus. To get it positive we must make the 3 negative

z=-2