SOLUTION: i need help with -9+x=5x-7 it said to subtract x but i'm not sure how to do it.
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Question 638261: i need help with -9+x=5x-7 it said to subtract x but i'm not sure how to do it.
Found 2 solutions by MathLover1, stanbon:
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
......subtract from both sides
...eliminate and on left side
.......add to both sides
.........eliminate and on right side
...simplify
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
i need help with -9+x=5x-7 it said to subtract x but i'm not sure how to do it.
--------
-9+x-x = 5x-x-7
----
-9 = 4x-7
---
Add 7 to both sides of the equation:
-9+7 = 4x-7+7
---
-2 = 4x
---
Divide both sides by 4 to get:
x = -1/2
===============
Cheers,
Stan H.
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