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3.
[tex] \frac{4}{9} = \frac{8}{2r} [/tex]


Sagot :

SOLUTION ;

- r = 9

SOLVING STEPS ;

- 4/9 = 8/2r

= reduce the fraction with 2

= devide the 8 and 2 number

= 8 ÷ 2

= 4

= 4/9 = 4/r

- 4/9 = 4r

= then multiply the 4 and 9

= 4 × 9

= 36

= 36 = 4r

- 36 = 4r

= then replace the 36 and 4r

= 4r = 36

- 4r = 36

= devide the both sides of the equation by 4

FINAL ANSWER

= r = 9