15.37x7.88-9.37x7.88+15.37x2.12-9.37x2.12=
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15.37x7.88-9.37x7.88+15.37x2.12-9.37x2.12=15.37x7.88-9.37x7.88+15.37x2.12-9.37x2.12=15.37x7.88-9.37x
15.37x7.88-9.37x7.88+15.37x2.12-9.37x2.12=
15.37x7.88-9.37x7.88+15.37x2.12-9.37x2.12=
15.37x7.88-9.37x7.88+15.37x2.12-9.37x2.12=
15.37×7.88-9.37×7.88+15.37×2.12-9.37×2.12
=（15.37-9.37）×7.88+（15.37-9.37）×2.12
＝6×7.88+6×2.12
＝6×（7.88+2.12）
＝6×10
＝60
60
60
15.37x7.88-9.37x7.88-9.37x7.88-15.37x2.12+9.37x2.12最简解题法
15.37x7.88-9.37x7.88+15.37x2.12-9.37x2.12=
15.37X7.88-9.37X7.38+1.537X21.2-93.7X0.262
简便计算:15.37x7.88-9.37x7.88-15.37x2.12+9.37x2.12急急急!明天就要交了!
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