SOLUTION: my son has this problem to do can you show us how to do it.. 2/5 =x/10 x=?

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Question 786678: my son has this problem to do can you show us how to do it.. 2/5 =x/10 x=?

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
2%2F5+=x%2F10

2%2A10+=+5%2Ax Cross multiply

20+=+5x

20%2F5+=+x

4+=+x

x+=+4