Срочнооооо!!!!!!!!!!!!!

Question

Срочнооооо!!!!!!!!!!!!!

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Answer 1

1) 8*11/33*4=2*1/3*1=2/3

2) 18*25/75*12=3*1/3*2=3/6=1/2

3) (6*7+7*5)/49=7*(6+5)/49=(6+5)/7=11/7=1  4/7