Răspuns
\Explicație pas cu pas:
x : y = 2 rest 1
x = 2 × y + 1
301 - ( x + y ) × 2 - 89 = 78
301 - ( 2 × y + 1 + y ) × 2 = 78 + 89
301 - ( 3 y + 1 ) × 2 = 167
( 3 × y + 1 ) × 2 = 301 - 167 → aplic metoda mersului invers
( 3 × y + 1 ) × 2 = 134
3 × y + 1 = 134 : 2
3 × y + 1 = 67
3 × y = 67 - 1
3 × y = 66
y = 66 : 3
y = 22
x = 2 × 22 + 1
x = 44 + 1
x = 45
