Question 692515
2/5 = x/40 CROSS MULTIPLY.
5X=2*40
5X=80
X=80/5
X=16 ANS.
 
15/3 = (x-3)/5
3(X-3)=5*15
3X-9=75
3X=75+9
3X=84
X=84/3
X=28 ANS.
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I'LL LEAVE THE REST FOR YOU TO PRACTICE WITH.

x+1/3 = 7/2 

3x-5/4 = -5/7