Question

hi plz solve this:

a+b=10
b+c=20
c+a= 24

a+b+c= ?

Answer 1

Given details -
a+b=10
b+c=20
a+c=24
and find a+b+c = ?

Firstly sum all three equations
2a + 2b + 2c = 54

Divide by 2
a + b + c = 54/2
a + b + c = 27

Answer 2

hope this helps :)

Answer 3

medal me

Answer 4

a + b = 10
a = 10 - b

b + c = 20
c = 20 - b

a + c = 24
10 - b + 20 - b = 24
30 - 2b = 24
-2b = 24 - 30
-2b = -6
b = 3

a + b = 10
a + 3 = 10
a = 10 - 3
a = 7

b + c = 20
3 + c = 20
c = 20 - 3
c = 17

check..
a + b = 10
7 + 3 = 10
10 = 10 (correct)

b + c = 20
3 + 17 = 20
20 = 20 (correct)

a + c = 24
7 + 17 = 24
24 = 24 (correct)

so a = 7, b = 3, and c = 17
a + b + c = 7 + 3 + 17 = 27

Answer 5

@Liza14 thanks for your efford. your answer is less time consuming. But i need clerification.