递等式两道; 7x8.5+(3.5+1/4x10)除以5 101x1/5-1/5x2

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递等式两道; 7x8.5+(3.5+1/4x10)除以5 101x1/5-1/5x2

递等式两道; 7x8.5+(3.5+1/4x10)除以5 101x1/5-1/5x2
递等式两道; 7x8.5+(3.5+1/4x10)除以5 101x1/5-1/5x2

递等式两道; 7x8.5+(3.5+1/4x10)除以5 101x1/5-1/5x2
7x8.5+(3.5+1/4x10)÷5=59.5+6÷5=60.7
101x1/5-1/5x2=20.2-0.4=19.8