What is the solution set of the following equation?

-8x + x + 15 = -7x + 12

Question

What is the solution set of the following equation?

-8x + x + 15 = -7x + 12

anonymous · Answer

can you simplify the equation? it could be easier for you to find the set when it is simplified

anonymous · Answer

what do you do to simplify?

anonymous · Answer

combined like terms, but with solution sets you don't combine across the equal sign. I'll show you.

combining the -8x and x will give us -7x. Now if we think about this, is there any number in the universe that could make this equation true?

-7x + 15 = -7x + 12

anonymous · Answer

umm 3?

anonymous · Answer

??

anonymous · Answer

no there is no number that will make it true. Let's take away the -7 because there is one on each side of the equal sign and we are left with:

x + 15 = x + 12

There really is no number we could substitute for x that would make this true right?