Question

Deside whether x=2 and y=-1 is the solution of equation 2x+y=3 or not
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Answer 1

${ \large{ \sf{ \underbrace{\underline{\bigstar \:Given\::-}}}}}$

$\sf\color{violet}{Decide\: whether \:x = 2 and\: y = -1 \:is\: the\: solution\: of\: the\: equation \:2x + y = 3 \:or \:not ?}$

${ \large{ \sf{ \underbrace{\underline{\bigstar \:To\: Find:-}}}}}$

$\sf\color{orange}{2x + y \:= 32x+y=3\: is \:the \:solution\: of\: equation\: or \:not.}$

${ \large{ \sf{ \underbrace{\underline{\bigstar \:Solution\: :-}}}}}$

$\bold\pink{\fbox{\sf{x = 2, y = -1}}}$

According to note first point ( L.H.S = R.H.S ) and second point

$\sf\color{orchid}{2x + y = 32x+y=3}$

$\sf\color{orchid}{2 × 2 + -1 = 32×2+−1=3}$

$\sf\color{orchid}{4 + (-1) = 34+(−1)=3}$

$\bold\color{blue}{According\: note\: third\: point}$

$\mapsto\bf{4 - 1 = 34−1=3}$

$\bold\color{blue}{After\: doing\: calculations}$

$\mapsto\bf{3 = 33=3}$

Hence, decided that L.H.S = R.H.S or both side term is equal

${ \large{ \sf{ \underbrace{\underline{\bigstar \:Answer\: :-}}}}}$

2x + y = 32x+y=3 is the solution of equation when x = 2 and y = -1 .

${ \large{ \sf{ \underbrace{\underline{\bigstar \:Note\: :-}}}}}$

$\color{red}\longmapsto$Equation means the both side term should be equal that L.H.S = R.H.S

$\color{red}\longmapsto$For deciding we need to apply the number which is given.

$\color{red}\longmapsto$When there is opposite sign like ' + and - ' the term should be subtracted.

Thankyou :)

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