X+3x=144
4x=144
144/4=36
X=36
Answer:
34
Step-by-step explanation:
Sum means that you add.
column means the first set going verticly.
so 7 + 2 + 11 + 14
9 + 11 + 14
20 + 14
34
You need to get x by itself. Add 6 to both sides.
x = 14
Answer:
55 degree
Step-by-step explanation:
90 +35+missing angle=180 sum of all angles of triangle is 180
so. missing angle =55 degree