Question

termen necunoscus 3+3*{3+3*[3+3*(3-3:a)]}​

Answer 1

Răspuns:

Explicație pas cu pas:

3 + 3 × {3 + 3 × [ 3 + 3 × ( 3 - 3 : a ) ] } = 3 × 31

3 + 3 × {3 + 3 × [ 3 + 3 × ( 3 - 3 : a ) ] } = 93

3 × {3 + 3 × [ 3 + 3 × ( 3 - 3 : a ) ] } = 93 - 3

3 × {3 + 3 × [ 3 + 3 × ( 3 - 3 : a ) ] } = 90

3 + 3 × [ 3 + 3 × ( 3 - 3 : a ) ] = 90 : 3

3 × [ 3 + 3 × ( 3 - 3 : a ) ] = 30 - 3

3 + 3 × ( 3 - 3 : a ) = 27 : 3

3 × ( 3 - 3 : a ) = 9 - 3

3 × ( 3 - 3 : a ) = 6

3 - 3 : a = 6 : 3

3 - 3 : a = 2

3 : a = 3 - 2

3 : a = 1

a = 3 : 1

a = 3 → numarul, aflat prin metoda mersului invers