Question

((-53 ) + 28).(-3 1/2)​

Answer 1

$(( - 53) + 28) \times ( - 3 \frac{1}{2} ) = - 25 \times ( - 3 \frac{1}{2} ) = \\ \frac{25 \times 7}{2} = \frac{175}{2} = 87 \frac{1}{2} = 87.5$