please answer me this question
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Answer:the value of x is 77
Step-by-step explanation:
First add all number and take blank as x
When x+x =2x
Sum of all number is 15
15+2x = 169
2x=169-15 the equation is this and solve it I give you answer
uma419772:
Plz give me point
how 15 came
explain
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Answered by
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it is an ap.sum of all terms=n/2(2a+(n-1)d)=169.
here ,a=1 nd d=2 now we get n. using tn= (a+(n-1)d)=x
here ,a=1 nd d=2 now we get n. using tn= (a+(n-1)d)=x
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