Answer:
the answer is 43
Explanation:
this is so simple
the first thing that u have to remember or there is a rule
the rule is : that all the three angels added up equal to 180 degrees
so that means 88+49+v=180
88+49+v=180 first combine like terms
137+v=180 now subtract both sides by 137
v= 43
ANSWER CHECK
88+49= 137
137+ 43= 180