A student is attempting to isolate the variable t in the literal equation below. Which statement best applies to the sample mathematical work shown? Given: 2t + s – 4 =8 – s
Step 1: I first add 4 to both sides, resulting in 2t + s = 12 – s.
Step 2: I then subtract s from both sides, resulting in 2t = 12 – 2s.
Step 3: I then divide both sides by 2, giving a final answer of t = 6 – s.
A. the student failed to add the proper quatity in step 1
B. the student failed to subtract 2s properly in step 2
C. the student failed to divide both sides by 2 properly in step 3.
D. the mathematical work is correct as written.