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

10y+14y-4=20y+15+3y
10y+14y-20y-3y=4+15
y=19
最后验证:等式两边都等于452

10y+14y-4=20y+15+3y
10y+14y-20y-3y=15+4
解得 y=19

10y+2(7y-2)=5(4y+3)+3y
10y+14y-4=20y+15+3y
10y+14y-20y-3y=15+4
y=19

24y-4=23y+15
y=19