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How would you find x in 2(x-6)=-18 using more than two steps?

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2 Answers

Ruby:
 
Another way of doing the problem in at least two steps.
 
2(x-6)=-18
 
Step 1: Expand the bracket on the left.  2x - 12 = - 18
 
Step 2: Add 12 to both sides.  2x - 12 + 12 = - 18 + 12. that is, 2x = -6
 
Step 3: Divide both sides by 2: (2/2)x = (-6/2), that is, x = -3.  Done.
 
If you have any questions, please post a comment.
 
Dattaprabhakar (Dr. G.)
Irvine, CA
 
Let's do it one small step at a time.
 
2(x-6)=-18         divide both sides by 2
2(x-6)=-18
    2        2          2/2 = 1  and  -18/2 = -9
x-6 =-9            add 6 to both sides
x-6 +6 = -9+6      -6 +6 = 0   -9=6 = -3
So
x =