3.6×7.2+3.6×1.1-8.3×2.6 =3.6﹙7.2+1.1﹚-8.3×2.6 =3.6×8.3-8.3×2.6 =8.3﹙3.6-2.6﹚ =8.3
简便计算3.6×7.2+3.6×1.1-8.3×2.6
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