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please help me solve this equation!?
o.k. im taking a virtual class at my school and nobody can figure out how to work it. and im stuck on a problem. the problem is......
5x=-7x+12
please help me!!!!!!!!!!
5 Answers
- Anonymous1 decade agoFavorite Answer
5x = -7x + 12
+7x +7x
12x = 12
x=1
- Anonymous1 decade ago
1. First, you need to get the variables on one side, so you add 7x to both sides (to keep the equation true).
2. Now you have 12x=12. So, to find what x is, simply divide both sides by 12 (since x is multiplied by 12). The answer is x=1.
These type of problems might look difficult but they are really very simple if you just think about it.
- Anonymous1 decade ago
Here:
Problem --> 5x = -7x + 12
Add 7x to both sides:
5x = -7x + 12
+ 7x = + 7x <-- APOE (Addition Property of Equality)
----------------------
12x = 0 + 12 <-- APOO/AIP (Additive Property of Opposites/Additive Inverse Property)
12x = 12 <-- AIPOZ (Addition Identity Property of Zero)
1/12 (12x = 12) 1/12 <-- MPOE (Multiplication Property of Equality)
x = 1
Check:
5x = -7x + 12
Plug-in:
5(1) = -7(1) + 12
5 = -7 + 12
5 = 5
Hope I helped.
- 1 decade ago
5x=-7x+12
you would add 7x to both sides to get rid of the -7x. You would get 12x=12. then you would divide by 12 on both sides to isolate the x. your answer would be x=1.
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