Respuesta :

jackggggg

Answer:

X = 12

Step-by-step explanation:

the total degree of any triangle is 180.

therefore I took (7x + 4) + (5x + 3) + ( 2x + 5) = 180

I replace the Xs with 12 and then the answer is 180

(7(12) + 4) + (5(12) + 3) + ( 2(12) + 5) = 180