3/4x-5=2/3x+1/4?how to work this problem out in detail?

Question

need to know step by step how to work this and also

a+1 +a-1=2/5

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3 5

Answer 1

3/4x  - 2/3x  = 5 + 1/4                9/12x - 8/12x  =  5 + 1/4      1/12x = 5  + 1/4      mult by 12   so  x=               a+1   +  a-1   =2/5     2a=2/5 div by 2      a= 1/5

Answer 2

Second problem very confusing to understand.....

1.) 3/4x-5=2/3x+1/4

Assuming this is (3/4x)-5=(2/3x)+1/4 what is meant.

Find the common denominator of both sides

That becomes [3-5(4x)]/4x = [2(4)+3x]/[4(3x)]

Let's simplify and cross multiply to get

(3-20x)(12x)= (4x)(8+3x)

Divide both sides by 4x to get

(3x)(3-20x)=(8+3x)

Distribute to get: 9x-60x^2=8+3x

Put in the quadratic equation form:

-60x^2+6x-8=0

Divide by 2 gives

-30x^2+3x-4=0

Use quadratic formula to solve

Might be imaginary

Answer 3

Yeah, good luck with that.