## Introductory Algebra for College Students (7th Edition)

Substitute -2$\frac{1}{2}$ into the equation for the variable and then simplify to see if the equation is true or false. 14-2x=-4x+7 14-2(-2$\frac{1}{2}$)=-4(-2$\frac{1}{2}$)+7 14+5=10+7 19$\ne$17 This is not a solution.