问题
解答题
120÷[4×3.9+(7.45-3.05)]×3.
答案
120÷[4×3.9+(7.45-3.05)]×3,
=120÷[4×3.9+4.4]×3,
=120÷[4×3.9+4×1.1]×3,
=120÷[4×(3.9+1.1)]×3,
=120÷[4×5]×3,
=120÷20×3,
=6×3,
=18.
120÷[4×3.9+(7.45-3.05)]×3.
120÷[4×3.9+(7.45-3.05)]×3,
=120÷[4×3.9+4.4]×3,
=120÷[4×3.9+4×1.1]×3,
=120÷[4×(3.9+1.1)]×3,
=120÷[4×5]×3,
=120÷20×3,
=6×3,
=18.