Question

b + 149 + [(72:8 + 28:4): 4] = 396
fara metoda mersului invers va rog​

Answer 1

Răspuns:

b + 149 + [(72:8 + 28:4): 4] = 396

b+149+(9+7):4=396

b+149+16:4=396

b+149+4=396

b+153=396

b=396-153

b=243

Answer 2

Explicație pas cu pas:

$\bf b + 149 + [(72:8 + 28:4): 4] = 396$

$\bf b + 149 + [(9 + 7): 4] = 396$

$\bf b + 149 + (16: 4) = 396$

$\bf b + 149 + 4 = 396$

$\bf b + 153 = 396$

$\bf b = 396 - 153$

$\red{\bf \underline{b = 243} }$