ex 21 ofer coroana rapiddd

Răspuns:

a+b+c=900

b=3*a=3a

b=c-25 => c=b+25=> c=3a+25

a+3a+3a+25=900

7a=900-25

7a=875

a=875:7

a=125

b=3*125=375

c=375+25=400

Răspuns:

Salut

Explicație pas cu pas:

a+b+c=900

b=3×a

b=c-25==>c=b+25

a l_____l

b l_____l_____l_____l

c l_____l_____l_____l+25

200-25=875

875 : 7=125 (un segment egal)

a=125

b=3x125=375

c=3x125+25=375+25=400

Verificare :

125+375+400=900

Sper că te-am ajutat! Succes! ❤️❤️