解方程 2(x+1.7)=9.2
解方程2(x+1.7)=9.21.2x÷2=602x-0.6×4=0.1216×0.5+3x=147x+2.5x=3.8(3.8-2)x=14.4....
解方程 2(x+1.7)=9.2 1.2x÷2=60 2x-0.6×4=0.12 16×0.5+3x=14 7x+2.5x=3.8 (3.8-2)x=14.4.
展开
1个回答
展开全部
(1)2(x+1.7)=9.2, 2(x+1.7)÷2=9.2÷2, x+1.7-1.7=4.6-1.7, x=2.9; (2)1.2x÷2=60, 1.2x÷2×2=60×2, 1.2x=120, 1.2x÷1.2=120÷1.2, x=100; (3)2x-0.6×4=0.12, 2x-2.4+2.4=0.12+2.4, 2x=2.52, 2x÷2=2.52÷2, x=1.26; (4)16×0.5+3x=14, 8+3x-8=14-8, 3x=6, 3x÷3=6÷3, x=2; (5)7x+2.5x=3.8, 9.5x=3.8, 9.5x÷9.5=3.8÷9.5, x=0.4; (6)(3.8-2)x=14.4, 1.8x=14.4, 1.8x÷1.8=14.4÷1.8, x=8. |
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