JEDNO RÓWNANIE
2(x-1)+8=1/5x+15
2x-2+8 = 1/5x+15
2x-1/5x = 15+2-8
1 5/5x-1/5x = 9
1 4/5x = 9
9/5x = 9 /:9/5
x = 9·5/9
x = 45/9
x =5
2x-2+8=1/5x+15/*5
10x-10+40=x+75
10x-x=75-40+10
9x=45
x=5
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2(x-1)+8=1/5x+15
2x-2+8 = 1/5x+15
2x-1/5x = 15+2-8
1 5/5x-1/5x = 9
1 4/5x = 9
9/5x = 9 /:9/5
x = 9·5/9
x = 45/9
x =5
2x-2+8=1/5x+15/*5
10x-10+40=x+75
10x-x=75-40+10
9x=45
x=5