Question

2 ori deschidem acolada 42 minus deschidem paranteza patrata 12 plus deschidem paranteza rotunda 8 plus a ori 5 inchidemaparanteza rotunda inchidem paranteza patrata inchidem arcolada egal 24

Answer 1

2 x { 42 - [ 12 + ( 8 + a x 5 ) ] } = 24

42 - [ 12 + ( 8 + a x 5 ) ] = 24 : 2

42 - [ 12 + ( 8 + a x 5 ) ] = 12

12 + ( 8 + a x 5 ) = 42 - 12

12 + ( 8 + a x 5 ) = 30

8 + a x 5 = 30 - 12

8 + a x 5 = 18

a x 5 = 18 - 8

a x 5 = 10

a = 10 : 5

a = 2.

Sper ca te-am ajutat! :)

Answer 2

Răspuns:

Explicație pas cu pas:

2x{42-[12+(8+ax5)]}=24

{[42-(12+(8+ax5)]}=24:2

{[42-(12+(8+ax5)]}=12

[(12+(8+ax5)] =42-12

[(12+(8+ax5)]=30

8+ax5=30-12

8+5a=18

5a=18-8

5a=10

a=10:5

a=2