3(x-5)+7=x+1 rozwiąz równanie
3(x-5)+7=x+13x-15+7=x+13x-8=x+1 /-x2x-8=1 /+82x=9 /:2x=4.5
3(x-5)+7=x+1
3x-15+7=x+1
3x-8=x+1
2x=9
x=4.5
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3(x-5)+7=x+1
3x-15+7=x+1
3x-8=x+1 /-x
2x-8=1 /+8
2x=9 /:2
x=4.5
3(x-5)+7=x+1
3x-15+7=x+1
3x-8=x+1
2x=9
x=4.5