Решите уравнение x+11/43=9/12
x+36/155=45/62
21/34-y=16/51
77/89+y=173/178
21/78-a=4/39
19/21-a=14/210

$x+ frac{36}{155}= frac{45}{62} x= frac{45}{62}- frac{36}{155} x= frac{225-72}{310} x= frac{153}{310}$

$frac{21}{34}-y= frac{16}{51} y= frac{21}{34}- frac{16}{51} y= frac{63-32}{102} y= frac{31}{102}$

$frac{77}{89}+y= frac{173}{178} y= frac{173}{178}- frac{77}{89} y= frac{173-154}{178} y= frac{19}{178}$

$frac{21}{78}-a= frac{4}{39} a= frac{21}{78}- frac{4}{39} a= frac{21-8}{78} a= frac{13}{78}$

$frac{19}{21}-a= frac{14}{210} a= frac{19}{21}- frac{14}{210} a= frac{190-14}{210} a= frac{176}{210}$