Question

Пж помогите!!! :)))))

Answer 1

$1.;a);y-3y=-2y\b);-16t+15t=-t\c);-15-3t+20=5-3t\d);7-2y+3y+2=y+9\\2.;a);frac3{38}y+frac34y=frac6{76}y+frac{57}{76}y=frac{63}{76}y\b);-frac45b+frac6{15}b=-frac{12}{15}b+frac6{15}b=-frac6{15}b=-frac25b\c);-frac2{21}x-frac47x=-frac2{21}x-frac{12}{21}x=-frac{14}{21}x=-frac23x$