Question

Solve for z. 8z − 4 = 7z

Answer 1

8z − 4 = 7z

move 8z to the other side

sign changes from +8z to -8z

8z-8z-4=7z-8z

-4= 7z-8z

-4= -z

mutiply both sides by -1 to get +z

(-4)(-1)= (-z)(-1)

Answer:

z= 4

Answer 2

Answer:

you collect the like terms

8z -4=7z

-4=7z -8z

-4=-z

menus cancel menus

Z=4//