+0

0
233
5

(x+2)/4 - (x-1)/5 = 15

Mar 4, 2018

#1
+18078
+1

Multily everything by 20   to get

5(x+4) - 4 (x-1) = 300    expand

5x + 20 - 4x + 4 = 300   combine like terms

x + 24 = 300                  subtract 24 from both sides

x = 276

Mar 4, 2018
#2
+2340
+2

I see a minor error in ElectricPavlov's solution. I think this is simply a copying error.

After multiplying by the LCM of the denominator on both sides, all existing fractions disappear.

5(x+2)-4(x-1)=300

5x+10-4x+4=300

x+14=300

x=286

I like to call this error a "flow-through" error.

Mar 4, 2018
#3
+18078
+1

YOU are correct X !!!  Thanx for fixin' it   !

ElectricPavlov  Mar 4, 2018
#4
+2340
0

Don't worry! It happens to all of us!

Here is an example where I fell victim to the "flow-through" error: https://web2.0calc.com/questions/monic-quartic#r1.

The question asks for a fourth-degree polynomial with given roots, and, of course, I misread some of the roots.

TheXSquaredFactor  Mar 4, 2018
#5
+18078
0

Wow!   And THAT was a LOT of work !

ElectricPavlov  Mar 4, 2018