10.50 a plus 3.75 b equals 2071.50, where a is the number of adult tickets sold and b is the number of student tickets sold, can be used to find the number of adult and student tickets. If 82 students attended, how may adult tickets were sold?
Write out 10.50a + 3.75b = 2071.50. Than substitute the b with 82. Than simplify. To get your answer (PENDAS, than properties of addition and or subtraction)
