Question

pls solve and help me ​

Answer 1

Answer:

X= 4 this is the correct answer

X:7::12:21

x/7=12/21

X=12x7/21

X=4

Answer 2

Step-by-step explanation:

(i) x=10

(ii) x=4

(iii) x= 7

(iv) x=2.4

(v) x=4/3

(vi) x= 2.1