How do you solve \frac { 5x - 3} { 4} = 7?

3 Answers
Mar 30, 2018

x=31/5

Explanation:

(5x-3)/4=7

Cross multiply

5x - 3= 7 xx 4

5x - 3= 28

Then add 33 on both sides

5x - 3 + 3 = 28 + 3

5x = 31

x = 31/5

Mar 30, 2018

x=31/5

Explanation:

"to eliminate the fraction multiply both sides by 4"

cancel(4)^1xx(5x-3)/cancel(4)^1=4xx7

rArr5x-3=28

"add 3 to both sides"

5xcancel(-3)cancel(+3)=28+3

rArr5x=31

"divide both sides by 5"

(cancel(5) x)/cancel(5)=31/5

rArrx=31/5

Aug 4, 2018

x=31/5

Explanation:

To get rid of the 4 in the denominator, we can multiply both sides by 4 to get

5x-3=28

Next, add 3 to both sides to get

5x=31

Lastly, we can divide both sides by 5 to get

x=31/5

Hope this helps!