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15 votes
15 votes
20 points for answer

20 points for answer-example-1
User Novella
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1 Answer

24 votes
24 votes

Answer:

x = 11

Explanation:

Convert decimals to integers:
(3x-21)/(30) =0.4

Multiply both sides of the equation by the common denominator:
((3x-21)*30)/(30) =0.4*30

Reduce the fraction:
3x-21=0.4*30

Calculate the product or quotient: 3x - 21 = 12

Rearrange unknown terms to the left side of the equation: 3x = 12 + 21

Calculate the sum or difference: 3x = 33

Divide both sides of the equation by the coefficient of variable: x = 33 ÷ 3

Calculate the product or quotient: x = 11

Answer:

x = 11

User VojtaStavik
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3.1k points