Library / CEMC Cayley /125 of 470
If x=3x = 3x=3, the value of −(5x−6x)-(5x - 6x)−(5x−6x) is
Pick one
When x=3x = 3x=3, we have −(5x−6x)=−(−x)=x=3-(5x - 6x) = -(-x) = x = 3−(5x−6x)=−(−x)=x=3.
Alternatively, when x=3x = 3x=3, we have−(5x−6x)=−(15−18)=−(−3)=3-(5x - 6x) = -(15 - 18) = -(-3) = 3−(5x−6x)=−(15−18)=−(−3)=3.
Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.