If you would like to simplify |-18-16| - |-8+(-21)|, you can calculate this using the following steps:
|-18-16| - |-8+(-21)| = |-34| - |-29| = 34 - 29 = 5
The correct result would be 5.
4x+1 = 2x+7
4x-2x = 7-1
2x = 6
x= 6/2
x= 3
Angle A= angle B
angle C= angle a(2)
a+a+2a=180 (since all triangles equal 180 degrees)
180=4a
180/4
a=45
angle A and angle B both equal 45 degrees. Angle C equals 90 degrees.