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Emergency-x-x-1-2-2x-3-3-1-




Question Number 214729 by MathematicalUser2357 last updated on 18/Dec/24
Emergency  ((x(x+1))/2)=((2x−3)/3)+1
$$\mathrm{Emergency} \\ $$$$\frac{{x}\left({x}+\mathrm{1}\right)}{\mathrm{2}}=\frac{\mathrm{2}{x}−\mathrm{3}}{\mathrm{3}}+\mathrm{1} \\ $$
Answered by MATHEMATICSAM last updated on 18/Dec/24
((x(x + 1))/2) = ((2x − 3)/3) + 1  ⇒ ((x^2  + x)/2) = ((2x)/3)  ⇒ 3x^2  + 3x = 4x  ⇒ 3x^2  − x = 0  ⇒ x(3x − 1) = 0  Either x = 0  Or 3x − 1 = 0  ⇒ x = (1/3)
$$\frac{{x}\left({x}\:+\:\mathrm{1}\right)}{\mathrm{2}}\:=\:\frac{\mathrm{2}{x}\:−\:\mathrm{3}}{\mathrm{3}}\:+\:\mathrm{1} \\ $$$$\Rightarrow\:\frac{{x}^{\mathrm{2}} \:+\:{x}}{\mathrm{2}}\:=\:\frac{\mathrm{2}{x}}{\mathrm{3}} \\ $$$$\Rightarrow\:\mathrm{3}{x}^{\mathrm{2}} \:+\:\mathrm{3}{x}\:=\:\mathrm{4}{x} \\ $$$$\Rightarrow\:\mathrm{3}{x}^{\mathrm{2}} \:−\:{x}\:=\:\mathrm{0} \\ $$$$\Rightarrow\:{x}\left(\mathrm{3}{x}\:−\:\mathrm{1}\right)\:=\:\mathrm{0} \\ $$$$\mathrm{Either}\:{x}\:=\:\mathrm{0} \\ $$$$\mathrm{Or}\:\mathrm{3}{x}\:−\:\mathrm{1}\:=\:\mathrm{0} \\ $$$$\Rightarrow\:{x}\:=\:\frac{\mathrm{1}}{\mathrm{3}} \\ $$

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