10y+2(7y-2)=5(4y+3)+3y怎么算
问题描述:
10y+2(7y-2)=5(4y+3)+3y怎么算
答
10y+2(7y-2)=5(4y+3)+3y
10y+14y-4=20y+15+3y
10y+14y-20y-3y=15+4
y=19