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Mathematics 15 Online
OpenStudy (anonymous):

-3x+6=x-10

OpenStudy (emmamink):

Ok, to solve this problem you want you x values on one side. To do this we must use the equality property of equations

OpenStudy (emmamink):

Now, we want to get x on the left side. First we add 10 to each side

OpenStudy (emmamink):

We now have -3x+16=x

OpenStudy (emmamink):

Now we want to add 3x to each side so that we can get rid of the -3x.

OpenStudy (emmamink):

We know have 16=4x

OpenStudy (emmamink):

Using the multiplication property of equality, we can divide each side by four and our answer is x = 4.

OpenStudy (emmamink):

To test this, we plug in 4 wherever we see a x.

OpenStudy (emmamink):

So, -3(4)+6=4-10. Solve each side, -3 times 4 is -12 plus 6 is -6. For the left side, 4 minus 10 is -6. Well, -6 = -6, so 4 is correct.

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