-x2212-23-x25A1-34 Let x be in the boxThen-xA0-x2212-23-x-34-xA0-On moving -x2212-23-xA0-to the right-side it will become-xA0-23Therefore- x-34-23-57Hence- -x2212-23-57-34

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Standard VII

Mathematics

Question

$- 23 + □ = 34$

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Solution

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$- 23 + □ = 34$ Let $x$ be in the boxThen,
$- 23 + x = 34$
On moving $- 23$ to the right-side it will become
$+ 23$
Therefore, $x = 34 + 23 = 57$
Hence, $- 23 + 57 = 34$

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−23+□=34

−23+□=34 Let x be in the boxThen, −23+x=34 On moving −23 to the right-side it will become +23Therefore, x=34+23=57Hence, −23+57=34

$- 23 + □ = 34$

$- 23 + □ = 34$ Let $x$ be in the boxThen,
$- 23 + x = 34$
On moving $- 23$ to the right-side it will become
$+ 23$
Therefore, $x = 34 + 23 = 57$
Hence, $- 23 + 57 = 34$