2×(21+4x)-10x=14
2个回答
展开全部
解:解方程, 此方程的解为x = 14
2 × (21 + 4x) - 10x = 14
2 × 21 + 2 × 4x - 10x = 14
42 + 8x - 10x = 14
42 - 2x = 14
2x = 42 - 14
2x = 28
x = 28 ÷ 2
x = 28 × 1/2
x = 28/2
x = (14×2)/2
∴x = 14
答:此方程的解为x = 14
2 × (21 + 4x) - 10x = 14
2 × 21 + 2 × 4x - 10x = 14
42 + 8x - 10x = 14
42 - 2x = 14
2x = 42 - 14
2x = 28
x = 28 ÷ 2
x = 28 × 1/2
x = 28/2
x = (14×2)/2
∴x = 14
答:此方程的解为x = 14
本回答被网友采纳
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询