Question

3(a+7)=-33 step 1=a+7=-11 step2 a=-4 witch step is the mistake

Answer 1

Step 2

Explanation:

If we have a+7=-11 then we have to subtract 7 on both sides

a=-11-7 (remember that you have to add two negatives)

a=-18

Answer 2

Sort of hard to read, but I think step 1 was the mistake because they added 21 rather than subtracting it from -33