Question

z = 4a - 7

Answer 1

find a

Answer 2

Then you only want a on the right side. So you will have to add both sides with 7, and divide both sides with 4.

Answer 3

z / +7 = 4a - 7 / +7

Answer 4

likethat?

Answer 5

Do it one by one. Since a is multiplied to 4, you will have to do the division last. First you add 7 to get z+7=4a Only then you can divide by 4.

Answer 6

okayy so z+7=4a

Answer 7

z+7/4 = a

Answer 8

i that right?

Answer 9

Close. You have to divide everything by 4. When you write it that way, it means you divide 7 by 4 and add to z on the left hand side.

Answer 10

so how do i write it down? O_o

Answer 11

You should write (z+7)/4=a or\[\frac{ z+7 }{ 4 }=a\]

Answer 12

ohhh, so thats it?

Answer 13

Yup

Answer 14

O_o thanks!

Answer 15

Unless you are given z, that's all you can do. You're welcome.