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x+7=3\times \frac{7x}{0.5}
Multiply both sides of the equation by 3.
x+7=3\times 14x
Divide 7x by 0.5 to get 14x.
x+7=42x
Multiply 3 and 14 to get 42.
x+7-42x=0
Subtract 42x from both sides.
-41x+7=0
Combine x and -42x to get -41x.
-41x=-7
Subtract 7 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-7}{-41}
Divide both sides by -41.
x=\frac{7}{41}
Fraction \frac{-7}{-41} can be simplified to \frac{7}{41} by removing the negative sign from both the numerator and the denominator.