What is the answer of 5.21 + 0.6-0.27/3

Can someone me out here number 4 plz

Someone answer asap for ! michele pushes a box d meters across a floor. she uses a force f, in newtons, to push the box. she pushes the box for t seconds. the formula p = fd/t calculates the power, p, in watts, that it takes for michele to complete the task. solve the formula for d.

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