Question

what is the value of x in the equation 1/5x-2/3y=30 when y=15

Answer 1

Answer :

» Put y = 15 in the given equation

= $\sf{ \dfrac{1}{5x} - \dfrac{2}{3y} }$ = 0

= $\sf{ \dfrac{1}{5x} - \dfrac{2}{3×15} }$ = 0

= $\sf{ \dfrac{1}{5x} - \dfrac{2}{45} }$ = 0

= $\sf{ \dfrac{1}{5x} }$ = $\sf{ \dfrac{2}{105} }$

= 45 = 10x

= 10x = 45

= x = $\sf{ \dfrac{45}{10}}$

= x = $\sf{ \dfrac{9}{2}}$

= x = 4.5

•°• The value of x can be 9/2 as well as 4.5 also.

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