10y+2×(7y-2)=5×(4y+3)+3y решить уравнение
10y+2*(7y-2) = 5*(4y+3)+3y; 10y+14y-4 = 20y+15+3y; 24y-4 = 23y+15; 24y-23y = 15+4; y = 19.
10y+2×(7y -2)=5×(4y+3)+3y 10y+14y-4=20y+15+3y 24y-20y-3y=15+4 y=19