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September 18, 2014

September 18, 2014

Posted by **jane** on Sunday, October 2, 2011 at 6:19pm.

Please show step by step

- algebra -
**Catherine**, Sunday, October 2, 2011 at 6:22pm2(a-4)=-2

a-4=-1

a=3

- algebra -
**Ms. Sue**, Sunday, October 2, 2011 at 6:24pm2(a-4)+15=13

2a - 8 + 15 = 13

2a + 7 = 13

2a + 7 - 7 = 13 - 7

2a = 6

a = 6/2

a = 3

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