What is the equivalent ratio of 15: 21

15 and 21 can have a common divisor of 3. So 15 and 21 can be equally divided by 3.

15/3 = 5

21/3 = 7

So one equivalent ratio would be 5 : 7.

Answer

5:7

Step-by-step explanation:

both of the ratios equal 5/7. this one is just simplified.

Hope this helps!

x = 10

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Add 4 to both sides of the equation:

x - 4 (+4) = 6 (+4)

x = 6 + 4

x = 10

x = 10 is your answer.

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