Question 312253
v + 6b = 372


4v + 12b = 780 ___ dividing by 4 ___ v + 3b = 195


subtracting equations ___ v + 6b - (v + 3b) = 372 - 195  ___  3b = 177 ___ b = 59


substituting ___ v + 3(59) = 195 ___ v = 18