solve:

3/4x + 2/5 - x =3/10

To solve the given equation, let's start by rearranging the terms:

3/4x - x + 2/5 = 3/10

To combine similar terms, subtract x from 3/4x:

-1/4x + 2/5 = 3/10

To merge the fractions, convert the denominators to a common denominator:

-5/20x + 8/20 = 6/20

Now, the denominators are equal and we can combine the fractions:

-5/20x + 8/20 = 6/20

To simplify further, add the fractions:

(8 - 5)/20x = 6/20

3/20x = 6/20

Next, we isolate x by multiplying both sides of the equation by the reciprocal of the fraction 3/20:

(3/20x)(20/3) = (6/20)(20/3)

This simplifies to:

x = 60/60

x = 1

Therefore, the solution to the equation is x = 1.