16x-15-9x=13 how do you solve this step by step?

first you move the 15 to the 13 side like this:

16x-9x=13+15

If you move it, the sign always changes.

Then you do calculations.

16x-9x=(16-9)*x=7x

13+15=28

That means:

7x=28

Now you divide 7 from both sides:

x=4

So neatly, this is what it looks like:

16x-9x=13+15

7x=28

x=28/7

x=9

-Isb

for this pair of functions g(x)=x-2 and f(x)=|x| is (g o f)(a)= |a| -2

step-by-step explanation:

g(x)=x-2

f(x)=|x|

(g o f)(a)=?

(g o f)(x)=g(f(x))

(g o f)(x)=g(|x|)

(g o f)(x)=|x|-2

(g o f)(a)=|a|-2