Rozwiąż równania :
1.5=3+7x
2.1/3x+1=5
3.4/9x=1/3
4.3x+5=2x
5.x=-2x
6.4-x=1,3
7.2(x+1)=4
8.4=2(x-1)
9.3(x-2)=x
10.3(2x+3)=x-1
11.4(x-1)=3(x+1)
12.-(x-1)=2
13.x=1-3(x+1)
14.(x+1)-(1-x)=1
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1.5=3+7x
5-3=7x
x=2/7
2.1/3x+1=5
1/3x=5-1
1/3x=4
x=12
3.4/9x=1/3
x=3/4
4. 3x+5=2x
3x-2x=-5
x=-5
5.x=-2x
3x
6.4-x=1,3
-x=1,3-4
x=2,7
7. 2(x+1)=4
2x+2=4
2x=4-2
x=1
8.4=2(x-1)
4=2x-2
4+2=2x
x=3
9. 3(x-2)=x
3x-6=x
3x-x=6
2x=6
x=3
10. 3(2x+3)=x-1
6x+9=x-1
6x-x=-1-9
5x=-10
x=-2
11.4(x-1)=3(x+1)
4x-4=3x+3
4x-3x=3+4
x=7
12.-(x-1)=2
-x+1=2
-x=1
x=-1
13.x=1-3(x+1)
x=1-3x-3
x+3x=1-3
4x=-2
x=-1/2
14. (x+1)-(1-x)=1
x+1-1+x=1
2x=1
x=1/2
1.5=3+7x
-7x=3-5
-7x=-2/(-7)
x=2/7
2.1/3x+1=5
1/3x=5-1
1/3x=4:1/3
x=4*3/1
x=12/1
x=12
3.4/9x=1/3:4/9
x=1/3*9/4
x=9/12
x=3/4
4.3x+5=2x
3x-2x=-5
x=-5
5.x=-2x
x+2x=0
3x=0/3
x=0
6.4-x=1,3
-x=1.3-4
-x=-2.7/(-1)
x=2.7
7.2(x+1)=4
2x+2=4
2x=4-2
2x=2/2
x=1
8.4=2(x-1)
4=2x-2
-2x=-2-4
-2x=-6/(-2)
x=3
9.3(x-2)=x
3x-6=x
3x-x=6
2x=6/2
x=3
10.3(2x+3)=x-1
6x+9=x-1
6x-x=-1-9
5x=-10/5
x=-2
11.4(x-1)=3(x+1)
4x-4=3x+3
4x-3x=3+4
x=7
12.-(x-1)=2
-x+1=2
-x=2-1
-x=1/(-1)
x=-1
13.x=1-3(x+1)
x=1-3x-3
x+3x=-3+1
4x=-2/4
x=-2/4
x=-1/2
14.(x+1)-(1-x)=1
x+1-1+x=1
2x=1/2
x=1/2