How to write the constraint matrix

Dear All I want to write the following equality constraint matrix for 12 constraints my first constraint is 1) S2-S1+R1+O1=60, 2)S3-S2+R2+O2=40, . . 12)S1-S12+R12+O12=12 How to (define)enter it, Please help me for this as I have tried it by so many ways but I did not get the correct answer.