(5p-4q+8)+(7p+9q-10)=0 By Admin ReiPosted on October 28, 2022 (5p-4q+8)+(7p+9q-10)=0 (5p-4q+8)+(7p+9q-10)=05p+7p-4q+9q+8-10=012p+5q-2=012p+5q=2