Add. express your answer in lowest terms. 5 1/7 + 7 3/7

Subtract 8 1/6 - 4 5/6 . simplify the answer and write as a mixed number.

Asalesperson earns $320 per week plus 8% of her weekly sales. the expression representing her earnings is 320 + 0.08x. which of the following describes the sales necessary for the salesperson to earn at least $1000 in the one week?

2x minus y equals 6, x plus y equals negative 3