Posted by Mimi on Monday, November 22, 2010 at 10:28pm.
solve
2│2x7│+11=25

math  Emily, Monday, November 22, 2010 at 10:32pm
You want to get the absolute value portion of the equation alone first. They you can find what x would equal if it were (2x7) = blah and if (2x7) = blah.

math  Heather., Monday, November 22, 2010 at 10:36pm
2„ 2x7„ +11=25
11 11
2„ 2x7„ =14
4x +14 = 14
14 14
4x = 0 Divide both by 4
x = 0
Check
2„ 2(0)7„ +11=25
2„ 0 7„ +11=25
2„ 7„ +11=25
14 + 11 =25
25 =25

math  Emily, Monday, November 22, 2010 at 10:43pm
in addition to x=0, x=7
2[2x7]+11=25
2[2x7]=14
[2x7]=7
2x=14
x=7
Check
2[2(7)7]+11=25
2[7]+11=25
14+11=25
25=25 :D

math  Reiny, Monday, November 22, 2010 at 11:25pm
2│2x7│+11=25
2x7 = 7
then 2x7 = 7 or 2x + 7 = 7
2x = 14 or 2x = 0
x = 7 or x = 0
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