Question

Which of these is a simplified form of the equation 7z + 2 = 8 + 2z + 1z?

A. 10z=6
B. 10z=10
C. 4z=6
D. 4z=10

@robtobey

Answer 1

Add like terms, and isolate the variable z.

Answer 2

7z+2=8+2z+z

7z+2=8+3z

Can you take it from here?

Answer 3

no @dt

Answer 4

@dtan5457

Answer 5

7z+2=8+3z

Subtract the 2 and 3z from both sides..

Answer 6

5 and 1

Answer 7

@iambatman

Can you explain this better?

Answer 8

7 - 2 ,, 3-2

Answer 9

@dtan5457

Answer 10

When you have a problem as such:
4x+1=4-x

Don't be afraid of the the variables, the idea is to isolate x (get it by itself), so our first step in this example is add x on both sides,

4x+1+x=4-x+x you see on the left side it gets eliminated, -x+x = 0, so we're left with 4x+x+1 = 4, now you want to move the 1 on the right side, by subtracting the 1 on both sides (what you do to one side, you must also do the other, remember this)
4x+x=4-1
4x+x = 5x
4-1 = 3
putting this together
5x=3
now you see the 5 is "stuck" on to the x, which means it's being multiplied, and what's the opposite operation of multiplying? Division, so we divide by 5 on both sides so we're left with x, because 5/5 = 1, 1*x = x

So our solution is x = 3/5

Answer 11

so whats the answer ? @iambatman

Answer 12

...

Answer 13

I think it's time I give you a break from OS as you are not putting any effort and just looking for the answers, I suggest you try your questions on your own, and when you come back, you will have questions about where you got stuck or something about the concept.

Answer 14

@iambatman

Well put.