Solve for the first variable in one of the equations, then substitute the result into the other equation.
Y
=
2
y
/3
−
3
x
=
−
y
/3
+
7
Hope this helped!
Answer:
Its C im pretty sure. Also loveee your pfp!
Perimeter is the sum of all the sides. So we can set up an equation:

Now solve for 'x', combine like terms:
When it comes to terms with variables it's just like normal addition but we keep the variable:


So we have:

Add:

Subtract 7x to both sides:

Subtract 4 to both sides:

Divide 5 to both sides:
Answer:
The right answer is the first answer
Step-by-step explanation:
Look to the attached file
Hey!
1. scalene
2. isosoles
7. scalene
8. scalene
5. isosoles
6. isosoles
7. scalene
8. equilateral