Answer:
x = 11
Step-by-step explanation:
Convert decimals to integers: [tex]\frac{3x-21}{30} =0.4[/tex]
Multiply both sides of the equation by the common denominator: [tex]\frac{(3x-21)*30}{30} =0.4*30[/tex]
Reduce the fraction: [tex]3x-21=0.4*30[/tex]
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
