Question

de maneira semelhante , calcule :a)18/24×32/21b)90/36×60/99c)2/40×35/9×60/15d)4×7/90×50/35

Answer 1

a) 18/24×32/21
3/4×32/21
= 8/7

b) 90/36×60/99
5/2×20/33
5×10/33
=50/33

c) 2/40×35/9
1/20×35/9
1/5×7/9
= 7/36

d) 4×7/90×50/35
2×1/45×50/5
2×1/45×10
2×1/9×2
= 4/9

Answer 2

OI

a) 18/24 × 32/21  =

      576/504 ÷ 72

           8/7

b) 90/36 × 60/99 =

   5400/3861 ÷ 27

      200/143

c) 2/40 × 35/9 x 60/15 =

  4200/5400 ÷ 600

     7/9

d) 4 × 7/90 × 50/35 =

   1400/3150 ÷ 350

          4/9

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