Question
Solve the following equations by trial and error method: $x - 7 = 10$
✓
Answer
$x - 7 = 10$ Here, $L.H.S. = x - 7$ and $R.H.S. = 10.$
Therefore, if $x = 17, L.H.S. = R.H.S$. Hence, $x = 17$ 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.
|
|
$9$
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$9 - 7 = 2$
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$10$
|
No
|
|
$10$
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$10 - 7 = 3$
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$10$
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No
|
|
$11$
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$11 - 7 = 4$
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$10$
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No
|
|
$12$
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$12 - 7 = 5$
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$10$
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No
|
|
$13$
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$13 - 7 = 6$
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$10$
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No
|
|
$14$
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$14 - 7 = 7$
|
$10$
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No
|
|
$15$
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$15 - 7 = 8$
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$10$
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No
|
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$16$
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$16 - 7 = 9$
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$10$
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No
|
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$17$
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$17 - 7 = 10$
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$10$
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Yes
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