Question

Need help understanding this equation. 3(5z-1)-2(z+6)=10(z+1)

Answer 1

Hint: Distribute the number outside the bracket, into the bracket.

Answer 2

Okay thank you. I have simplified the equation down to 13z-15=10Z+10. I have forgotten how to combine the z's onto one side of the =

Answer 3

If you subtract a number from one side, you must also subtract the number from the other side. Likewise with division and multiplication.

Example: 2x+9=4x+10
2x-4x+9-9=4x-4x+10-9

Answer 4

So for that example, you'll get...
-2x=1
You want to get x, not -2x so you need to divide...
-2x/-2=1/-2
x=1/-2

Do you get how it works now? :)

Answer 5

Ah I see now. Thanks so much

Answer 6

:) You're welcome!