0.6✘+1.4✘=8.2-5.4
解方程.0.6x+1.4x=8.2-5.4;0.25x-3.2=0.5x-5.2;2.8x=19.32-6.4x;2x+3=11-6x;6(x+1)=0.5(10x+16...
解方程.
0.6x+1.4x=8.2-5.4; 0.25x-3.2=0.5x-5.2; 2.8x=19.32-6.4x;
2x+3=11-6x; 6(x+1)=0.5(10x+16); 5(x+2)-3(1-x)=23. 展开
0.6x+1.4x=8.2-5.4; 0.25x-3.2=0.5x-5.2; 2.8x=19.32-6.4x;
2x+3=11-6x; 6(x+1)=0.5(10x+16); 5(x+2)-3(1-x)=23. 展开
展开全部
①0.6x+1.4x=8.2-5.4
2x=2.8
2x÷2=2.8÷2
x=1.4
②0.25x-3.2=0.5x-5.2
0.25x-3.2-0.25x+5.2=0.5x-5.2-0.25x+5.2
0.25x=2
0.25x÷0.25=2÷0.25
x=8
③2.8x=19.32-6.4x
2.8x+6.4x=19.32-6.4x+6.4x
9.2x=19.32
9.2x÷9.2=19.32÷9.2
x=2.1
④2x+3=11-6x
2x+3+6x-3=11-6x+6x-3
8x=8
8x÷8=8÷8
x=1
⑤6(x+1)=0.5(10x+16)
6x+6=5x+8
6x+6-5x-6=5x+8-5x-6
x=2
⑥5(x+2)-3(1-x)=23
5x+10-3+3x=23
8x+7-7=23-7
8x÷8=16÷8
x=2
2x=2.8
2x÷2=2.8÷2
x=1.4
②0.25x-3.2=0.5x-5.2
0.25x-3.2-0.25x+5.2=0.5x-5.2-0.25x+5.2
0.25x=2
0.25x÷0.25=2÷0.25
x=8
③2.8x=19.32-6.4x
2.8x+6.4x=19.32-6.4x+6.4x
9.2x=19.32
9.2x÷9.2=19.32÷9.2
x=2.1
④2x+3=11-6x
2x+3+6x-3=11-6x+6x-3
8x=8
8x÷8=8÷8
x=1
⑤6(x+1)=0.5(10x+16)
6x+6=5x+8
6x+6-5x-6=5x+8-5x-6
x=2
⑥5(x+2)-3(1-x)=23
5x+10-3+3x=23
8x+7-7=23-7
8x÷8=16÷8
x=2
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