(1-0,532):13 =? --- 20 12,375:(3:4+0,75)=?

Question

(1-0,532):13 =?

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20

12,375:(3:4+0,75)=?

Answer 1

(1-0.532):13/20=0.72

1)1-0.532=0.468

2)13/20=0.65

3)0.468:0.65=0.72

12.375:(3:4+0.75)=8.25

1)3:4=0.75

2)0.75+0.75=1.5

3)12.375:1.5=8.25