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

Sagot :

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

Answer:

Step 2

Step-by-step 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