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Sagot :

ex.46

a. 3/5=3×7/5×7=21/35

b. 3/4=3×15/4×15=45/60

c.80/100=80÷20/100÷20=4/5

d. 49/21=49÷7/21÷7=7/3

ex.47

a. 4/3=20/15

b. 5/6=30/36

c.3,4/7,8=34/78

d. 7=56/8

e.56/24=7/3

f.72/45=8/5

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