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tomson1975

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A/B = C/D ⇔ A · D = B · C

5/7 = X/9 ⇔ 7 · X = 5 · 9

7X = 45

X = 45/7

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psmoke23

Answer:

7/45

Step-by-step explanation:

Because the x because its the constant which stay the same and it signify the numerator and once you times the x to 7 its is equals 7. The denominator is 9 which will be 5 times equal 45. That why it equals 7/45.