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[tex] \frac{3}{21} + \frac{1}{4} + \frac{ - 2}{49} [/tex]
[tex] \frac{3}{21} + \frac{1}{4} + \frac{ - 2}{49} [/tex]
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Respuesta:
207 / 588
Explicación paso a paso:
3 / 21
= ( 3 / 21 ) x ( 28 / 28 )
= ( 3 x 28 ) / ( 21 x 28 )
= 84 / 588
1 / 4
= ( 1 / 4 ) x ( 147 / 147 )
= ( 1 x 147 ) / ( 4 x 147 )
= 147 / 588
2 / 49
= ( 2 / 49 ) x ( 12 / 12 )
= ( 2 x 12 ) / ( 49 x 12 )
= 24 / 588
( 3 / 21 ) + ( 1 / 4 ) - ( 2 / 49 )
= ( 84 / 588 ) + ( 147 / 588 ) - ( 24 / 588 )
= ( 84 + 147 - 24 ) / 588
= ( 231 - 24 ) / 588
= 207 / 588