In a triangle, the total angle is 180 degrees. A straight line is always 180 degrees. With this in mind, the following can be obtained:

These are simultaneous equations.

An obtuse angle would be an angle more then 90 degrees.
So if you add two angles together, it could be less then 90 degrees, such as 30 + 50 = 80 degrees.
However, it can also be more then 90 degrees, or an obtuse angle, for example 60 + 50 = 110 degrees.
So it's sometimes.
Answer:
Let's simplify step-by-step.
3−3/4x−1/4x−7
=3+ −3/4x+ −1/4x+ −7
Combine Like Terms:
=3+ −3/4x+ −1/4x+ −7
=(−3/4x+ −1/4x)+(3+ −7)
=−x+ −4
Answer:=−x−4
Step-by-step explanation:
answer:-4