Rearrange: 3 + x + 1 -(2) = 0
Solve: x + 2= 0
So the value of "x" is -2
Answer:
Isosceles triangle
Step-by-step explanation:
Answer: Third option

Step-by-step explanation:
One of the ways of solving a system of equations is by equating the equations and solving for one of the variables.
In this case we have the system:

Note that if
is equal
and also
equals 
Then logically
must be equal to
.
We write equality.

Then the correct answer is the third option.
We can also solve for the variable x

Solve for the first variable in one of the equations, then substitute the result into the other equation.
Point Form:
(
3
5
,
4
5
)
,
(
−
7
25
,
−
24
25
)
(
3
5
,
4
5
)
,
(
-
7
25
,
-
24
25
)
Equation Form:
x
=
3
5
,
y
=
4
5
x
=
3
5
,
y
=
4
5
x
=
−
7
25
,
y
=
−
24
25