Answer: is 3 unless you mean that the x=7 if you mean that then it would be 147
Answer:
x = 1/3
Explanation:
Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other:
21x = 7
Divide 21 from both sides:
(21x)/21 = (7)/21
x = 7/21
x = 1/3 is your answer.
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