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4x-42=7x+33=????????

Răspuns :

Se simplifica 7x-4x = 3x... -42=3x+33 => 3x=-42-33 =>3x=-75... X=-75:3=>x=-25 S={-25}
x-4x = 3x... -42=3x+33 => 3x=-42-33 =>3x=-75... X=-75:3=>x=-25