4z+12=7z-9 Please explain every step to solve

1 answer:

4 0

$4z+12=7z-9\ \ \ \ | subtract\ 7z\\\\
-3z+12=-9\ \ \ | subtract\ 12\\\\
-3z=-21\ \ \ | divide\ by\ -3\\\\
z=7\\\\
Solution\ is\ z=7.$

You might be interested in

3(x-2)+2(x+1)=-14<br> plz show work

Rom4ik [11]

Hello!

First, let's write the problem.
$3\left(x-2\right)+2\left(x+1\right)=-14$
Apply the distributive property on the left side of the equation.
$=3x-6+2x+2$
Add like terms.
$=5x-4$
Let's plug that in into the original equation.
$5x-4=-14$
Add 4 to both sides.
$5x-4+4=-14+4$
$5x=-10$
Divide both sides by 5.
$\frac{5x}{5}=\frac{-10}{5}$

Our final answer would be,
$x=-2$

You can feel free to let me know if you have any questions regarding this!
Thanks!

- TetraFish

5 0

3 years ago

Read 2 more answers

Make three contrectic circles with radius is 2.4cm,3.8cm and 5.4cm

wariber [46]

Answer:

uxuccyccvivvivucyxtc

8 0

3 years ago

Consider the function f(x) = ex and the function g(x), which is shown below. How will the graph of g(x) differ from the graph of

SIZIF [17.4K]

Answer: Option C