jelaskan dengan caranya ya

A + B = C^t

(a + 1 ... 2) + (a ......... 3) = (3 ... 5)
(3 ......... 5) .. (2 .. b + 2) .. (5 ... 4)

(2a + 1 ........ 5) = (3 ... 5)
(5 .......... b + 7) .. (5 ... 4)

2a + 1 = 3 => 2a = 2 => a = 1
b + 7 = 4 => b = -3

a x b = 1 x -3 = -3