maths question

shanshine

solve the following equation
3/x + 3/2x = 2
?

Try multiplying the equation through by "x".

James

i dont think that works because i tried that and it didnt really work can you show me how to do it step by step?

shanshine

i dont think that works because i tried that and it didnt really work can you show me how to do it step by step?

3/x + 3/2x = 2

(multiply by x)

3 + 3/2 = 2x

can you solve it from there?

James

x = 4/9

3/x + 3/2x = 2/1
First find a common denominator:

9x/2x^2 = 2/1 (now cross multiply)

4x^2=9x ( the x's cancel)

4x=9

x=9/4

x=2.25

pete.mcfc

3/x + 3/2x = 2/1
First find a common denominator:

9x/2x^2 = 2/1 (now cross multiply)

4x^2=9x ( the x's cancel)

4x=9

x=4/9

4x=9 so isnt it x=9/4??

yes x=9/4

hyperscorpio

4x=9 so isnt it x=9/4??

yeah sorry :rolleyes:

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