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how do i rewrite this equation without fractions?

 

5-3/4x=3/8

 Feb 18, 2019
 #1
avatar+5788 
+1

\(5 - \dfrac 3 4 x = \dfrac 3 8\\ \text{multiply both sides by }8\\ 40 - 6x = 3\)

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 Feb 18, 2019
 #2
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+1

Thank youi!!

 

is it the same for addition? I need this one too

 

2/3x +4=2/5

Guest Feb 18, 2019
 #3
avatar+103695 
0

Yes for addition or subtraction.

BUT only if there are just numbers on the bottom - you have to be more careful if there are pronumerals (letters)

 

Multiply both sides of the equation but the smallest common denominator. 

 

2/3x +4=2/5

 

\(\frac{2}{3}x+4=\frac{2}{5}\\ \frac{2x}{3}+4=\frac{2}{5}\\ \text{The lowest common denominator is 3*5=15}\\ 15[\frac{2x}{3}+4]=15*\frac{2}{5}\\ [\frac{15*2x}{3}+15*4]=\frac{15*2}{5}\\ \frac{5*2x}{1}+60=\frac{3*2}{1}\\ 10x+60=6 \)

Melody  Feb 18, 2019

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