Pls need solution with step by step and solve on the paper pls and drwa FBD

Problem solutions of Q$1$ and Q$3$ must include a free body diagram!

$(35pts$ The truss system is given below. At $A,$ there is a roller support, and at G$,$ there is a pin support. The vertical distance between points $G$ and $H$ is $2\mathrm{.}5$ m $,$ between $G$ and I is $3$ m $,$ and between G and J is $4$ meters.

a$)(5pts)$ Determine all the support reactions at points A and G $.$

b$)(30pts$ Determine the forces in members DI$,$ JI$,$ and GH$.$ State whether members are in tension or in compression. You can use both the method of joints and the method of sections.