Question

Resolva a expressão numérica.( 1/2 ) + ( - 14/5 ) - (+ 1,2) *

- 3,5

+ 4,5

+ 2,1

+ 3,5

- 4,5



me ajudem por favor​

Answer 1

Oie, Td Bom?!

= 1/2 + (- 14/5) - 1,2

= 1/2 - 14/5 - 1,2

= 1/2 - 14/5 - 6/5 ⇐ MMC.

= 1/2 + -14-6/5

= 1/2 + -20/5

= 1/2 - 4 ⇐ MMC.

= 1-8/2

= -7/2

= - 7/2

= - 3,5

Att. Makaveli1996

Answer 2

$\sf \dfrac{1}{2} +(- \dfrac{14}{5}) - (+1.2)$

$\sf \dfrac{1}{2} - \dfrac{14}{5} - 1.2$

$\sf \dfrac{5}{10} - \dfrac{28}{10} - \dfrac{12}{10}$

$\sf \dfrac{5 - 28 - 12}{10}$

$\sf -\dfrac{35}{10}$

$\sf -3.5$

Espero Ter Ajudado !!