Question

j)800:[425-13 x(48:4)-(89+a x 4)]=10

Answer 1

Răspuns:

• a = 25

Explicație pas cu pas:

800 : [425 - 13 x (48 : 4) - (89 + a x 4)] = 10

425 - 13 x 12 - (89 + a x 4) = 800 : 10

425 - 13 x 12 - (89 + a x 4) = 80

425 - 156 - (89 + a x 4) = 80

269 - (89 + a x 4) = 80

89 + a x 4 = 269 - 80

89 + a x 4 = 189

a x 4 = 189 - 89

a x 4 = 100

a = 100 : 4

a = 25