7x-5⼀4=3⼀8;2x-1⼀6=5x+1⼀8;x-1⼀2+1=x-1;3⼀10(200+x)-2⼀10(300-x)=300x9⼀25;2y-1⼀3=y+2⼀4-1;3⼀4[4⼀3(1⼀2...

2024-12-30 09:03:28
推荐回答(3个)
回答1:

14x-15=3 x=9/7; 8x-4=15x+3 x=-1;x-1/2=1 x=3;600+3x-600+2x=300x18/5 x=12*18=216;
2y-1/3=y+2/4-1 8y-4=3y+6-12 5y=-2 y=-2/5
(1/2x-1/4)-6=3/2x+1 1/2x-3/2x=7+1/4 -2=14x+x/2 -4=29x x=-4/29

回答2:

因为14x-15=3 所以 x=9/7
解8x-4=15x+3 x=-1
即x-1/2=1 x=3600+3x-600+2x=300x18/5 x=12*18=216;2y-1/3=y+2/4-1
8y-4=3y+6-12 5y=-2 y=-2/5
(1/2x-1/4)-6=3/2x+1 1/2x-3/2x=7+1/4 -2=14x+x/2
-4=29x x=-4/29

回答3:

你这个是什么区别咯