i have linear equation problem: objective: maximize r17 variables: - floats: q7, q8, q9, q10, q11, q12, q13, q14, q15, q16, q17 - floats: r7, r8, r9, r10, r11, r12, r13, r14, r16, r16, r17 relations: - q7 +q8 +q9 +q10 + q11 + q12 + q13 + q14 + q15 + q16 = q17 - r7 +r8 +r9 +r10 + r11 + r12 + r13 + r14 + r15 + r16 = r17 - r7 = q7 / 0.50 - r8 = q8 / 0.75 - r9 = q9 / 0.88 - r10 = q10 / 1.00 - r11 = q11 / 1.13 - r12 = q12 / 1.18 - r13 = q13 / 1.76 - r14 = q14 / 2.11 - r15 = q15 / 2.33 - r16 = q16 / 2.50 constraints: - 1000 <= q7 <= 17500 - 2000 <= q8 <= 6300 - 5000 <= q9 <= 19292 - 1200 <= q10 <= 29820 - 100 <= q11 <=2887.50 - 700 <= q12 <= 20825 - 300 <= q13 <= 9481.50 - 150 <= q14 <= 5764.50, - 1200 <= q15 <= 48594, - 300 <= q16 <= 12600 - 60500 <= q17 <= 60500 i have placed constraints in excel using opensolver, need automate this. i've been looking here , played little bit glpk , couldn't find proper w...