(1-1) 84÷(55-51)+68
=84÷4+ A
= B + 68
= C ,
A 是多少?
(1-2) 84÷(55-51)+68
B 是多少?
(1-3) 84÷(55-51)+68
C 是多少?
=27× A +174
= B + C
= D
B 是多少?
D 是多少?
=48+ A -39
= B - C
= A × B +337
= C + D
= E
E 是多少?
A ×(18+ B )+38
= C × D +38
共賣出( F )罐汽水
F 是多少?
= A ÷ B + C
= D + E
= F