Jak rozwiązac równanie 5= 3 + 7x Daje naj do 19 30 Plis pomóżcie
5=3+7x7x=5-37x=2 /:7x= 2/7
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2=7x. /:7
2/7=x
5=3+7x
7x=5-3
7x=2 /:7
x= 2/7