1.Verify: a-(-b)=a+b a=21 , b=15 a=16 , b=8 2.Solve: 3×(-2)×(-4) (-100)÷25 3.Solve: 4×1/4×5/4 2/3×7/9 7÷4/5 3/5÷1/2
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1.Verify: a-(-b)=a+b a=21 , b=15 a=16 , b=8 2.Solve: 3×(-2)×(-4) (-100)÷25 3.Solve: 4×1/4×5/4 2/3×7/9 7÷4/5 3/5÷1/2
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