1 Answer

1. Subtract 2y from both sides to move it out of the way:


2. Divide both sides by 2 to move it out of the way:

3. Regroup fraction on the right side:

4. Cancel 2s and divide 16 by 2:

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Solve to get one answer:
5. Replace the variable in the other equation with your answer:

Distribute the 2


6. Subtract 16 from both sides to move it out of the way:


7. Divide by 4 to get to y:


..
Put this answer in an equation to get the other answer:
8. Replace y with what it equals:


9. Subtract to get the second answer:

..
Check:
10. Use first equation:

11. Replace variables with what they equal:

12. Multiply:

13. Add:

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Check more:
14. Use second equation:

15. Replace variables with what they equal:

16. Multiply:

 

28 ?