(0.7-3/10-4/5+0.03)*(-100)怎么算?

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(0.7-3/10-4/5+0.03)*(-100)怎么算?(0.7-3/10-4/5+0.03)*(-100)怎么算?(0.7-3/10-4/5+0.03)*(-100)怎么算?(0.7-3/10-

(0.7-3/10-4/5+0.03)*(-100)怎么算?
(0.7-3/10-4/5+0.03)*(-100)怎么算?

(0.7-3/10-4/5+0.03)*(-100)怎么算?
(0.7-3/10-4/5+0.03)*(-100)
=-70+30+80-3
=37

=（0.7-0.3-0.75+0.03）*（-100）
=(0.4-0.75+0.03)*(-100)
=(-0.35+0.03)*(-100)
=-0.32*(-100)
=32