784 marbles are shared among x, y,z in the ratio 3: 2: 5. how many marbles that each get?

Pls! does anybody know a shortcut for answering these types of questions in the future?

Use the expression below.–4b + 8c + 12 – 8b – 2c + 6part asimplify the expression. enter your answers in the boxes. b + c + part bfactor the simplified expression using the gcf. a. 2(–2b + c + 3) b. 3(–2b + c + 3) c. 4(–2b + c + 3) d. 6(–2b + c + 3)part cwhat is the value of the expression when b = 2 and c = –3? enter your answer in the box.

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps