rozwiąż równanie
5(x-7)+2=-28
4(x-2)+9=5
2(x-1)+3(x+1)=26
5x-35+2=-28
5x-33=-28
5x=5
x=1
4x-8+9=5
4x+1=5
4x=4
2x-2+3x+3=26
5x+1=26
5x=25
x=5
1. 5x-35+2=-28
5x=-28-2+35
5x=5 / :5
2. 4x-8+9=5
4x=5-9+8
4x=4 /:4
3. 2x-2+3x+3=26
5x=26-3+2
5x=25 /:5
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5(x-7)+2=-28
5x-35+2=-28
5x-33=-28
5x=5
x=1
4(x-2)+9=5
4x-8+9=5
4x+1=5
4x=4
x=1
2(x-1)+3(x+1)=26
2x-2+3x+3=26
5x+1=26
5x=25
x=5
1. 5x-35+2=-28
5x=-28-2+35
5x=5 / :5
x=1
2. 4x-8+9=5
4x=5-9+8
4x=4 /:4
x=1
3. 2x-2+3x+3=26
5x=26-3+2
5x=25 /:5
x=5