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one way to solve an equation in this format, "a/b = c/d", is to multiply both sides by "b"and by "d". You're effectively "cross multiplying" the fractions:

(2x + 1) / 3x = (x - 1) / 5x ∴(2x + 1)(5x) = (x - 1)(3x) ∴10x2 + 5x = 3x2 - 3x

You can then factor an "x" out of both sides

∴10x + 5 = 3x - 3

And rearrange to solve:

∴10x - 3x = -3 -5 ∴7x = -8

∴x = -8/7

Q: How do you solve 2xplus 1 over 3x equals xminus 1 over 5x?

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To solve for x, we'd have to know what this expression equals.

x=12

Is it 15 over 40?

X = 32

(4/9) x = That's not an equation. If there were a number after the 'equals' sign, then we could calculate the value of 'x'. But as it is, there's no question there, so there's nothing to solve.

Related questions

To solve for x, we'd have to know what this expression equals.

d = -196

x=12

c equals b over 8

It equals 2 over 8.

Is it 15 over 40?

x is 9.

X = 32

x equals 4 over 35

72

n=-4/3

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