Answer:
x=9/8
Step-by-step explanation:
1/4x + 1/5 = 2/1 in this equation you can only find the L.C.M by using reciprocating method such that the numerators is exchange with the denominations as follows;
4x/1 + 5/1 = 1/2
You can equate the equation to 0
4x/1 + 5/1 - 1/2 =0. Now, LCM is 2
Multiply through by 2
2 X 4x/1 + 2 X 5/1 - 2 X 1/2 =0 we have; 8x + 10 - 1 = 0
8x = -9...then
X= -9/8//
