(解方程)7x=6x-7 -3⼀2x=5⼀2+x -2=-x+√2 4-2x=-4x-5 -0.7y+0.2=-0.3y+0.1 快一点!!!谢谢

2024-12-19 05:12:29
推荐回答(4个)
回答1:

7x=6x-7
7x-6x=7
x=7

-3/2x=5/2+x
-3/2x-x=5/2
-5/2x=5/2
x=-1

-2=x+根号2
x=-2-根号2

4-2x=-4x-5
-2x+4x=-5-4
2x=-9
x=-2/9

-0.7y+0.2=-0.3y+0.1
-0.7y+0.3y=0.1-0.2
-0.4y=-0.1
y=-1/4

回答2:

解:(1)x=-7
(2)-3/2x-x=5/2
-5/2x=5/2
x=-1
(3)x=2+√2
(4)2x=-9
x=-4.5
(5)-0.4y=-0.1
y=2.5

回答3:

(1)x=-7 (2)x=-1 (3)X=2-根号2 (4)x=-4.5 (5)y=-2.5

回答4:

6X-7=4X-5 解方程