Question

2×2×2×2-{501-2×[3+4×(5+6×X)-8]}:9=1 cine e X... Metoda mersului invers
DAU COROANĂ

Answer 1

am trecut pe rand termenii in cealalta parte

Answer 2

Răspuns:  X = 7

Explicație pas cu pas:

2 × 2 × 2 × 2 - { 501 - 2 × [ 3 + 4 × ( 5 + 6 × X ) - 8] } : 9 = 1

16 -  { 501 - 2 × [ 3 + 4 × ( 5 + 6 × X ) - 8] } : 9 = 1

{ 501 - 2 × [ 3 + 4 × ( 5 + 6 × X ) - 8] } : 9 = 16 - 1

{ 501 - 2 × [ 3 + 4 × ( 5 + 6 × X ) - 8] } : 9 = 15

501 - 2 × [ 3 + 4 × ( 5 + 6 × X ) - 8] = 15 × 9 = 135

2 × [ 3 + 4 × ( 5 + 6 × X ) - 8] = 501 - 135

2 × [ 3 + 4 × ( 5 + 6 × X ) - 8] = 366

3 + 4 × ( 5 + 6 × X ) - 8 = 366 : 2

3 + 4 × ( 5 + 6 × X ) - 8 = 183

3 + 4 × ( 5 + 6 × X ) = 183 + 8

4 × ( 5 + 6 × X ) = 191 - 3

5 + 6 × X = 188 : 4

6 × X = 47 - 5

6 × X = 42

X = 42 : 6

X = 7 → numarul, aflat prin metoda mersului invers