4.3−4.3÷0.5×0.03
=4.3−8.6×0.03
=4.3−0.258
=4.042
先算除法4.3除以0.5等于8.6，再算乘法8.6乘以0.03等于0.258，最后算减法4.3减0.258等于4.042。
4.3-4.3/0.5*0.03
=4.3(1-1/0.5*0.03)
=4.3*(1-3/50)
=4.3*47/50
=4.3*0.94
=4.042
脱式计算
4.3-4.3÷0.5×0.03
=4.3-8.6×0.03
=4.3-0.258
=4.042
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