$($$\dfrac{3}{2}$$-$$\dfrac{5}{11}$$-$$\dfrac{3}{13}$$)$$.$$($$2x-20$$)$$=$$\dfrac{-3}{4}$$+$$\dfrac{5}{22}$$+$$\dfrac{3}{26}$
⇒$($$\dfrac{429}{286}$$-$$\dfrac{130}{286}$$-$$\dfrac{66}{286}$$)$$.$$2$$.$$($$x-10$$)$$=$ $\dfrac{-429}{572}$$+$$\dfrac{130}{572}$$+$$\dfrac{66}{572}$
⇒$\dfrac{233}{286}$$.$$2$$.$$(x-10)$$=$$\dfrac{-233}{572}$
⇒$\dfrac{233}{143}$$.(x-10)$$=$$\dfrac{-233}{572}$
⇒$x-10$$=$$\dfrac{-233}{572}$$:$$\dfrac{233}{143}$
⇒$x-10$$=$$\dfrac{-1}{4}$
⇒$x=$$\dfrac{-1}{4}$$+$$10$
⇒$x=$$\dfrac{39}{4}$
Vậy $x=$$\dfrac{39}{4}$
Chúc bn hok tốt!!!
