Question

Tìm x 1) X/5=18/15 2)X/12=3/x 3) X - 2 1/2= 3 1/6 4) 2/5× x= 1/2

Answer 1

1: =>x/5=6/5

=>x=6

2: =>x^2=36

=>x=6 hoặc x=-6

3: =>x-5/2=3+1/6=19/6

=>x=19/6+5/2=19/6+15/6=34/6=17/3

4: =>x=1/2:2/5=1/2*5/2=5/4