Question

If (a - b)+(a+b) = 25, then (a + b) = ?
(a) 30
(b) 25
(c) 12​
(d) 150

Answer 1

(a-b)+(a+b)=25

a-b+a+b =25

2a=25

a= 25/2 = 12,5

b = 0

a+b = 25