The value of x is 1/3
Expressions and equations
Equations are expressions separated by an equal sign
Given the following equation
21x = 7
We are to find the value of x. Divide both sides by 21
21x/21 = 7/21
x = 7/21
x = 1/3
Hence the value of x is 1/3
Learn more on expression here:https://brainly.com/question/723406
#SPJ1
