4x/20=30-3x/3x

4x/20=30-3x/3x

4x/20=30-3x/3x
To denominator: 4x = 600-20
Merger: 4x = 580
The coefficient is 1: x = 145

Solving equation 3x / 4x = 20 / (30-3x)

First, X ≠ 0
90-9x=20×4
x=10/9

(x^2+3x+9/x^2-4x+4)/[(x-3)(x^2+3x+9)/3x-6)]/(1/x^2-9)

The original formula = (X & # 178; + 3x + 9) / (X-2) &# 178; * 3 (X-2) / (x-3) (X & # 178; + 3x + 9) * (x + 3) (x-3)
=3/(x-2)(x-3)*(x+3)(x-3)
=3(x+3)/(x-2)

(3x+9)/(4-4x+x^2)÷（x+3）/(x-2)

(3x+9)/(4-4x+x^2)÷（x+3）/(x-2)
=3(x+3)/(x-2)²×(x-2)/(x+3)
=3/(x-2)

Given x ^ 6 = 2, find the value of (3x ^ 9) ^ 2 - (4x ^ 4) ^ 6

(3x^9)^2-(4x^4)^6
=9x^18-4^6x^24
=9*2^3-4^62^4
=72-65536
=-65464

Given that the value of the algebraic formula 3x ^ 2-4x + 6 is 9, then the value of x ^ 2-4 / 3x + 6 is?

3x²-4x+6=9
3x²-4x=3
Divide two sides by three
x²-4/3x=1
x²-4/3x+6=1+6=7

3x+4x=12

x=2/7

4x(3x-4)=12
Come on, it's going to be a day,

4x(3x-4)=12
12x-16=12
12x=28
x=7/3

4x+1.25=5.75 （x-8）/1.2=6

4x+1.25=5.75
4x=4.5
x=1.125
（x-8）/1.2=6
x-8=6*1.2=7.2
x=15.2

Find 4x-28.75 = x + 4.25

The solution is 4x-x = 4.25 + 28.75
3x=33
x=33÷3
x=11