Question

3[-(a+3)-(2a-3)]+4= 2(2a-3)

a=???

AUXILIO!!!

Answer 1

Respuesta:

a = 10/13

Explicación paso a paso:

3[-(a+3)-(2a-3)]+4= 2(2a-3)

3[-a-3-2a+3]+4= 4a-6

3[-3a]+4= 4a-6

-9a+4= 4a-6 => -13a = -10 => a = 10/13

Comprobación:

3[-(10/13+3)-(2(10/13)-3)]+4= 2(2(10/13)-3)

3[-(49/13)-(20/13-39/13)]+4= 2(20/13-39/13)

3[-49/13-(-19/13)]+4= 2(-19/13)

3[-49/13+19/13]+4= -38/13

3[-30/13]+4= -38/13 => -90/13+4= -38/13

-90/13+52/13= -38/13 => -38/13 = -38/13

RPTA: a = 10/13