Question
Solve the following equations by trial and error method: $2x + 4 = 3x$
✓
Answer
$2x + 4 = 3x$ Here, $L.H.S. = 2x + 4$ and $R.H.S. = 3x$
Therefore, if $x = 4, L.H.S. = R.H.S$. Hence, $x = 4$ is the solution to this equation.
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x
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L.H.S.
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R.H.S.
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Is L.H.S. = R.H.S.
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$1$
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$2(1) + 4 = 6$
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$3(1) = 3$
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No
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$2$
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$2(2) + 4 = 8$
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$3(2) = 6$
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No
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$3$
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$2(3) + 4 =10$
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$3(3) = 9$
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No
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$4$
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$2(4) + 5 = 12$
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$3(4) = 12$
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Yes
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