11个回答
展开全部
1.2x2.5+0.8x2.8
=3×0.4×2.5+(1—0.2)×2.8
=3+2.8—0.2×2.8
=5.8—0.56
=5.24
=3×0.4×2.5+(1—0.2)×2.8
=3+2.8—0.2×2.8
=5.8—0.56
=5.24
展开全部
=1.2*2.5+0.8*2.5+0.8*0.3=（1.2+0.8）*2.5+0.24=5+0.24=5.24
展开全部
1.2x2.5+0.8x2.8
=1.2x2.5+0.8x2.5+0.8x0.3
=(1.2+0.8)x2.5+0.8x0.3
=2x2.5+0.8x0.3
=5+0.24
=5.24
=1.2x2.5+0.8x2.5+0.8x0.3
=(1.2+0.8)x2.5+0.8x0.3
=2x2.5+0.8x0.3
=5+0.24
=5.24
追问
👙👙👙非礼呀
本回答被网友采纳
展开全部
1.2x2.5+0.8x2.8
=1.2x2.5+0.8x(2.5+0.3）
=1.2x2.5+0.8x2.5+0.8x0.3
=（1.2+0.8）x2.5+0.24
=2x2.5+0.24
=5+0.24
=5.24
=1.2x2.5+0.8x(2.5+0.3）
=1.2x2.5+0.8x2.5+0.8x0.3
=（1.2+0.8）x2.5+0.24
=2x2.5+0.24
=5+0.24
=5.24
追问
👎
👏👍
推荐律师服务：
若未解决您的问题，请您详细描述您的问题，通过百度律临进行免费专业咨询
