Răspuns :
x + y + z = 888
y = ( 102 - 9 : 9 ) × 7 + 7
y = ( 102 - 1 ) × 7 + 7
y = 101 ×7 + 7
y = 707 + 7 = 714
z = ( 1000 - 248 × 4 ) × ( 1000 - 1000 : 4 - 248 × 3 )
z = ( 1000 - 992 ) × ( 1000 - 250 - 744 )
z = 8 × 6
z = 48
x + y + z = 888
x + 714 + 48 = 888
x + 762 = 888
x = 888 - 762
x = 126
Răspuns: x=126
Explicație pas cu pas:
x+y+z=888
y=(102-9÷9)×7+7
=(102-1)×7+7
=101×7+7
=707+7
=714
z=(1000-248×4)×(1000-1000÷4-248×3)
=(1000-992)×(1000-250-744)
=8×(750-744)
=8×6
=48
x+714+48=888
x+762=888
x=888-762
x=126