1.

Ii) 1/2(x + 1.7) - 1/3(x – 2.3) = 1​

Answer»

ANSWER:

The value of x is 1.3.

Step-by-step-explanation:

We have given a linear EQUATION in variable x.

We have to find the value of x.

The given linear equation is

\displaystyle{\sf\:\dfrac{1}{2}\:(\:x\:-\:1.7\:)\:-\:\dfrac{1}{3}\:(\:x\:-\:2.3\:)\:=\:1}

\displaystyle{\implies\sf\:\dfrac{x}{2}\:-\:\dfrac{1.7}{2}\:-\:\left(\:\dfrac{x}{3}\:-\:\dfrac{2.3}{3}\:\right)\:=\:1}

\displaystyle{\implies\sf\:\dfrac{x\:-\:1.7}{2}\:-\:\left(\:\dfrac{x\:-\:2.3}{3}\:\right)\:=\:1}

\displaystyle{\implies\sf\:\dfrac{x\:-\:1.7}{\cancel{2}}\:\times\:\cancel{6}\:-\:\left(\:\dfrac{x\:-\:2.3}{\cancel{3}}\:\times\:\cancel{6}\:\right)\:=\:1\:\times\:6\:\qquad\:\dots\:[\:Multiplying\:by\:6\:]}

\displaystyle{\implies\sf\:(\:x\:-\:1.7\:)\:\times\:3\:-\:(\:x\:-\:2.3\:)\:\times\:2\:=\:6}

\displaystyle{\implies\sf\:3x\:-\:5.1\:-\:(\:2x\:-\:4.6\:)\:=\:6}

\displaystyle{\implies\sf\:3x\:-\:5.1\:-\:2x\:+\:4.6\:=\:6}

\displaystyle{\implies\sf\:3x\:+\:5x\:=\:6\:+\:5.1\:-\:4.6}

\displaystyle{\implies\sf\:5x\:=\:6\:+\:5.1\:-\:4.6}

\displaystyle{\implies\sf\:10\:\times\:5x\:=\:10\:\times\:(\:6\:+\:5.1\:-\:4.6\:)\:\qquad\:\dots\:[\:Multiplying\:by\:10\:]}

\displaystyle{\implies\sf\:50x\:=\:60\:+\:51\:-\:46}

\displaystyle{\implies\sf\:50x\:=\:60\:+\:5}

\displaystyle{\implies\sf\:50x\:=\:65}

\displaystyle{\implies\sf\:x\:=\:\cancel{\dfrac{65}{50}}}

\displaystyle{\implies\sf\:x\:=\:\cancel{\dfrac{13}{10}}}

\displaystyle{\implies\underline{\boxed{\red{\sf\:x\:=\:1.3\:}}}}



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