solving for x on both sides: 5x - 15 = 3x + 39

Re: solving for x on both sides

stars_bleed said:
I need help on solving this equation :

5x-15=3x+39

Your help will be thanked. :)
Click to expand...

I agree...having the variable on both sides of the equals sign is confusing. SO.....let's get rid of the variable term from one side!

I see a 3x on the right side of the equals sign. If I ADD -3x to both sides, of the equation, I will not have changed the solution of the equation, but I WILL have made the equation much easier to deal with:

5x - 15 + (-3x) = 3x + 39 + (-3x)

Combine like terms to simplify each side:

2x - 15 = 39

Now, isn't that easier?? Can you take it from here? Remember to check your solution by substituting into the original equation.....
 
yes i can i have been starring at it and i finally got it
thank you very much for your help.
 
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