Solve this
1) 20+ -5
2) 63 - 56 + (40)

  best answer for the question.1.     divide  7/24  by  35/48  and reduce the quotient to the lowest fraction. 

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.

Which expression is equivalent to -12(3x-3/4)