SOLUTION: -4x - -20 + 10x = 40

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Question 669235: -4x - -20 + 10x = 40
Answer by ReadingBoosters(3246) About Me  (Show Source):
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Starting with
-4x - (-20) + 10x = 40
-4x + 20 + 10x = 40
...
Combine like terms
6x + 20 = 40
6x+%2B+cross%2820%29+-+cross%2820%29+=+40+-+highlight%2820%29
6x = 20
cross%286%29x%2Fcross%286%29+=+20%2F6
x = 20%2F6+=+10%2F3 = 3 1%2F3
...
If starting with
-4x - 20 + 10x = 40
6x = 60
x = 10
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