Question

30分快的加分解方程 速度来啊

4（X+0.5）=X+7
3-6（X+ 2/3 ）=2/3
1-Y/3-Y=3- Y+2/4
1.5X-1 /3 -X/0.6=0.5

Answer 1

4（X+0.5）=X+7
4x+2=x+7
4x-x=7-2
3x=5
x=5÷3
x=5/3

3-6（X+ 2/3 ）=2/3
3-2(x+2)=2/3
3-2x-4=2/3
2x=3-4-2/3=-5/3
x=-5/6

1-Y/3-Y=3- Y+2/4
两边乘12
4-4Y-12Y=36-3Y-6
4-16Y=30-3Y
13Y=26
Y=2

1.5X-1 /3 -X/0.6=0.5
两边乘3
1.5X-1-5X=1.5
5X-1.5X=-1-1.5
3.5X=-2.5
X=-2.5÷3.5
X=-5/7

Answer 2

x=5/3 2.x=--5/18 3.--15/2 4.x=5

Answer 3

4（X+0.5）=X+7
4x+2=x+7
4x-x=7-2
3x=5
x=5÷3
x=5/3

3-6（X+ 2/3 ）=2/3
3-2(x+2)=2/3
3-2x-4=2/3
2x=3-4-2/3=-5/3
x=-5/6

1-Y/3-Y=3- Y+2/4

4-4Y-12Y=36-3Y-6
4-16Y=30-3Y
13Y=26
Y=2

1.5X-1 /3 -X/0.6=0.5

1.5X-1-5X=1.5
5X-1.5X=-1-1.5
3.5X=-2.5
X=-2.5÷3.5
X=-5/7 格式自己写

Answer 4

解：步骤如下：
4（X+0.5）=X+7
4x+2=x+7
4x-x=7-2
3x=5
x=5÷3
x=5/3

3-6（X+ 2/3 ）=2/3
3-2(x+2)=2/3
3-2x-4=2/3
2x=3-4-2/3=-5/3
x=-5/6

1-Y/3-Y=3- Y+2/4
两边乘12
4-4Y-12Y=36-3Y-6
4-16Y=30-3Y
13Y=26
Y=2

1.5X-1 /3 -X/0.6=0.5
两边乘3
1.5X-1-5X=1.5
5X-1.5X=-1-1.5
3.5X=-2.5
X=-2.5÷3.5
X=-5/7