Question

Multi step equation help pls very quick
7z + 5 = 9z - 3

Answer 1

`\sf \: z = 4`

Explanation:

`\sf7z + 5 = 9z - 3`

First, subtract 7z by both sides.

`\sf5 = 9z - 3 - 7z`

Combine like terms.

`\sf5 = 2z - 3`

Now, add 3 to both sides.

`\sf5 + 3 = 2z \\ \sf8 = 2z`

Now, divide both sides by 2.

`\sf4 = z`

Answer 2

• z = 4

Explanation:

`7z + 5 = 9z - 3 \\ 5 + 3 = 9z - 7z \\ 8 = 2z \\ z = \frac{ \cancel{8}} {\cancel{2}} (4)/(1) \\ z = 4`

To verify:

Put the value z = 4

`7z + 5 = 9z - 3 \\ 7(4) + 5 = 9(4) - 3 \\ 28 + 5 = 36 - 3 \\ 33 = 33`

`\therefore` L.H.S = R.H.S