Question

What is an equivalent to -16m^2n-(-25m^2n)+(-7m^2n)

Answer 1

The equivalent expression is:

`-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)=2m^2n`

Explanation:

Given the expression

`-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)`

`\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a,\:-\left(-a\right)=a`

`=-16m^2n+25m^2n-7m^2n`

`\mathrm{Add\:similar\:elements:}\:-16m^2n+25m^2n-7m^2n=2m^2n`

`=2m^2n`

Therefore, the equivalent expression is:

`-16m^2n-\left(-25m^2n\right)+\left(-7m^2n\right)=2m^2n`