Answer:
The student made the error at step 2.
Step-by-step explanation:
The correct step will be:
Step 2; 6x − 12 = 14 + 2x
As 3 will be multiplied with 2x and 4 which will give 6x − 12
Represent and then add up these consecutive, positive, even integers:
x + (x+2) + (x+4) + (x+6) = 116
Then 4x + 12 = 116, or 4x = 104. Then x=26.
First integer is 26; second is 28; third is 30; fourth is 32.
Add these up. If the sum = 116, you'll know these answers are correct.
240 minutes is equal to 4 hours.