2/7=_/21
6 is the missing number.
Plug it in:
6/21
Solve to turn it into a decimal by dividing:
6/21 = 0.28571428571428571428571428571429
Solve 2/7 to turn it into a decimal:
2/7 = 0.28571428571428571428571428571429
0.28571428571428571428571428571429 = 0.28571428571428571428571428571429
2/7 = 6/21
So, 6 would be the missing number.
I hope this helps! :)
Wow!!! I'm in the 4th grade.. Can u make it easier?
Here's an easier way.
2/7=_/21
Use x for the unknown.
Cross multiply.
2/7 = x/21
7x = 42
Solve for x.
x = 42/7 = 6
To solve the equation 2/7 = x/21, where x is the unknown value, we can use cross multiplication.
Cross multiplication involves multiplying the numerator of the first fraction with the denominator of the second fraction, and multiplying the denominator of the first fraction with the numerator of the second fraction. In this case, we have:
2 * 21 = 7 * x
42 = 7x
To isolate x, we can divide both sides of the equation by 7:
42/7 = x
Simplifying the left side gives us:
6 = x
So, the value of x is 6.