Question

( -3/4 + 1 2/5 ) -3 ( 4.2 ) + 6 - ( - 5.4 ÷ 2/3 )​

Answer 1

Respuesta:

( -3/4 + 1 2/5 ) -3 ( 4.2 ) + 6 - ( - 5.4 ÷ 2/3 )​

operaciones:

$= (((- 3 * 5) + (12 * 4)) / (4 * 5)) - 3 * (((21 * \ cancelar {2}) / (5 * \ cancelar {2}))) + 6 - (- ((27 * \ cancelar {2}) / (5 * \ cancelar {2})): 2/3) =$

$= (33/20) -3 * ((21/5)) + 6 - (- 27/5 * 3/2) =$

$= (33/20) -63 / 5 + 6 - (- 81/10) =$

$= (33- (63 * 4)) / (4 * 5) +6 - (- 81/10) =$

$= -219 / 20 + 6 - (- 81/10) =$

$= ((- 219) + (6 * 20)) / (20) - (- 81/10) =$

$= -99 / 20 - (- 81/10) =$

$= ((- 99) - (- 81 * 2)) / (2 * 10) =\\\\\\= 63/20$

resultado final:

⇒ $63/20$