> 数学 >
解方程10x+10(x+3)=670
人气:409 ℃ 时间:2020-04-12 18:21:51
解答
10x+10(x+3)=670
10x+10x+30=670
20x+30=670
20x+30-30=670-30
20x=640
20x÷20=640÷20
x=32
推荐
猜你喜欢
© 2024 79432.Com All Rights Reserved.
电脑版|手机版