Question

if 21:2x=7:12, find the value of x​

Answer 1

Answer:

18

Step-by-step explanation:

21 is 3 x7, so it's 21:36

so, 2x=36

36/2= 18

Answer 2

Answer:

x=18

Step-by-step explanation:

You can rewrite ratios as fractions in problems like these to solve for a variable x:

21/2x=7/12

Cross multiply so that there are whole numbers rather than fractions:

21*12=2x*7

Simplify and solve for x:

252=14x

x=252/14

x=18

please tell me if im wrong or if my explanation doesn't make sense, hope this helps!!