Jackie is painting rocks. She paints 7 rocks blue. She paints fewer than 3 rocks red. How many rocks does jackie paint in all?
1 answer:
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Answer:
Step-by-step explanation:
Because vertical angles are always equal, we want to solve .
We can add 10 to both sides to get .
We can subtract from both sides to get
.
Lastly, we divide both sides by 20 to get .
So, and we're done!
The check is left as an exercise to the reader.