Question

if a + b is equals to 15 b + c is equals to 17 and C + A is equals to 10 then what is the value of a + b + c​

Answer 1

$\large{\underline{\red{\rm{AnswEr:}}}}$

GIVEN

⟹a+b=15-----(1)

⟹b+c=17----(2)

⟹c+a=10-----(3)

putting together equation 1 and 3

⟹a+b=15

⟹c+a=10

⟹b-c=5-------(4)

than, putting together equation 4 and 2

⟹b+c=17

⟹b-c=5

⟹2b=22

⟹b=11

putting the value of b in EQ 1

⟹a+b=15

⟹a+11=15

⟹a=15-11

⟹a=4

similarly, putting the value of a 3

⟹c+a=10

⟹c+4=10

⟹c=10-4

⟹c=6

Hence,

• The value of a+b+c=>(4+11+6)=21

$\bold\purple{\boxed{a+b+c=>21}}$