tolong jawab dengan caranya yaps

(4x-7)² + 12² = 13²
(4x-7)² + 144 = 169
(4x-7)² = 25
4x-7 = √25
4x - 7 = 5
4x = 12
x = 3

jadi, nilai x = 3 (B)

menggunakan teori phytagoras
a = √13^2-12^2
a = √25
a = 5 cm
maka,
(4x-7) = 5
4x = 5+7
4x = 12
x = 12/4
x = 3 cm ( B ).