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x-7x-28=315
Multiply both sides of the equation by 7.
-6x-28=315
Combine x and -7x to get -6x.
-6x=315+28
Add 28 to both sides.
-6x=343
Add 315 and 28 to get 343.
x=\frac{343}{-6}
Divide both sides by -6.
x=-\frac{343}{6}
Fraction \frac{343}{-6} can be rewritten as -\frac{343}{6} by extracting the negative sign.