Answer:
28
Step-by-step explanation:
16−(−12)
=16−(−12)
=16+12
=28
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28 is your answer
(Hope it helps)
5.10÷85=$0.06<---
check your answer
85×0.06=$5.10
Error: They subtracted 9x from both sides when they should have subtracted 12. You can’t subtract unlike terms
Correct: x=-5/16
Subtract 12 from both sides to get -5 on the left and add 7x and 9x to get 16x. Divide both sides by 16 to isolate x.
There you go. I just drew it to make it easier than giving coordinates