计算题,能简算要简算 14.6-12.8+5.4-7.2 2.8+[2.5÷(96-60)]
问题描述:
计算题,能简算要简算 14.6-12.8+5.4-7.2 2.8+[2.5÷(96-60)]
答
14.6-12.8+5.4-7.2
=14.6+5.4-(12.8+-7.2 )
=20-20
=0
2.8+[2.5÷(96-60)]
=2.8+2.5÷36
≈2.867