Subtract (7x−3) from (5−3x)⇒(5−3x)−(7x−3) (5−3x)−(7x−3)=(5−3x)−1(7x−3) NOTE: Every number is multiplied by 1 which is the same number or has no effect, thus −(7x−3)=−1(7x−3) Applying the distributive property, a(x+y)=axx+axy ⇒−1(7x−3)=−1x7x−1x(−3)=−7x+3 NOTE: - x - = + (5−3x)−1(7x−3)=5−3x−7x+3 Grouping like terms ⇒5−3x−7x+3=5+3−3x−7x ⇒5−3x−7x+3=8−10x