Question

x:30::7:15 then x+=​

Answer 1

Answer:

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Step-by-step explanation:

7:15::x:30

15 \times x = 30 \times 7 \\ x = \frac{30 \times 7}{15} \\ x = 14

Answer 2

Step-by-step explanation:

$\frac{x}{30} = \frac{7}{15} \\ x \times 15 = 30 \times 7 \\ 15x = 210 \\ x = \frac{210}{15} \\ x = 14$