Find a ratio equivalent to 12/21 with lower terms

Find factors of 12 and 21

Divide 3 from both numerator and denominator.

(12/21)/(3/3) = 4/7

4/7 is your ratio equivalent to 12/21

hope this helps

1/800 is the right answer

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,