Question

12/5= 3/x
What is the value of x

Answer 1

Answer:

$\frac{12}{5} = \frac{3}{x} \\ 12 \times x = 5 \times 3 \\ 12 x = 15 \\ x = \frac{15}{12} \\ = 1.25$

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Answer 2

If you have fraction in both side and u see an equal sign, u can cross multiply so it woul be like this : 12 x X = 3x15 then bring over your 12 and it become divide. So in that case your working will be like this: X= (3x15)/12