Answered

Ben had some stickers.Tim had 20 stickers.after Ben bought 3more stickers,He had twice as many stickers as Tim.how many stickers had Ben first?

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Jers15viz
X-ben X+3=2(20) X+3=40 X=37 Hope this helps =)
Asdfghjkl123456789viz
Let x = Ben
20 = Tim

x + 3 = 20 * 2
x + 3 = 40
 
Transpose 3 to the other side of the equation.

x = 40 - 3
x = 37

Ben had 37 stickers.