Answer:
- x/10 = 9
multiply by 10 on both sides
-x = 90
divided by -1 on both sides
x = -90
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How do you solve this? [question in attachment]

In order to find the perimeter of a shape, we should add all of its sides.
Since a triangle has only 3 sides, we add 3 sides together, like so:-
⇒ 9x-7+12x-13+3x+8
Combine like terms:-
➪ 9x+12x+3x-7-13-8
Which simplifies to
➪9x+15x-7-21
On further simplification,
➪24x-28
So we conclude that the perimeter of the triangle is 24x-28 units.
<h3 /><h3>Good luck.</h3>
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Answer:
m^2 - m - 6
Step-by-step explanation:
(m-3)(m+2)
m^2 - 3m + 2m - 6
m^2 - m - 6
THE first option is correct
You were right already it’s A