\(\dfrac{x-10}{22}+\dfrac{x-8}{24}+\dfrac{x-6}{26}=3\\ =>\left(\dfrac{x-10}{22}-1\right)+\left(\dfrac{x-8}{24}-1\right)+\left(\dfrac{x-6}{26}-1\right)=0\\ =>\dfrac{x-32}{22}+\dfrac{x-32}{24}+\dfrac{x-32}{26}=0\\ =>\left(x-32\right)\left(\dfrac{1}{22}+\dfrac{1}{24}+\dfrac{1}{26}\right)=0\\ =>x-32=0\\ =>x=32\)
\(\dfrac{x-2}{76}+\dfrac{x-4}{74}=\dfrac{x-6}{72}+\dfrac{x-8}{70}\\ =>\left(\dfrac{x-2}{76}-1\right)+\left(\dfrac{x-4}{74}-1\right)=\left(\dfrac{x-6}{72}-1\right)+\left(\dfrac{x-8}{70}-1\right)\\ =>\dfrac{x-78}{76}+\dfrac{x-78}{74}-\dfrac{x-78}{72}-\dfrac{x-78}{70}=0\\ =>\left(x-78\right)\left(\dfrac{1}{76}+\dfrac{1}{74}-\dfrac{1}{72}-\dfrac{1}{70}\right)=0\\ =>x-78=0\\ =>x=78\)
\((Vì\ : \ 1/76+1/74-1/72-1/70<0)\)
