Astudent is attempting to isolate the variable s in the literal equation below. which statement best applies to the sample mathematical work shown?
given: st + s – 3 = 5 – s

a.
the student failed to add the proper quantity in step 1.
b.
the student failed to divide both sides by s properly in step 2.
c.
the student failed to subtract t from both sides properly in step 3.
d.
the mathematical work is correct as written.