500*20%+5%x=（500+x）*15/%

500*20%+5%x=（500+x）*15/%

500*20%+5%x=（500+x）*15/%
500*20%+5%x=500*15/%+x*15/%
500*5%=x*10/%
500*5=x*10
50*5=x
x=250
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The solution of equation 0.4x + 0.5 = 7.5 is the same as that of equation x + m divided by 0.1 = 20

0.4x=7
x=17.5
17.5+10m=20
10m=2.5
m=0.25

How to solve the equation 20 + 4x = 200 + X
cgf

3X=180
X=60

How to solve the equation x + 1.3 = 2.63

x+1.3=2.63
x+1.3-1.3=2.63-1.3
x=1.33

How to calculate the equation x-0.25x = 15

x-0.25x=15
0.75x=15
x=15/0.75=20

X minus 7 molecule 1 minus x minus 5 molecule 1 = x minus 6 molecule 1 minus x minus 4 molecule 1

1/(x-7)-1/(x-5)=1/(x-6)-1/(x-4)(x-5)/((x-7)(x-5))-(x-7)/((x-7)(x-5))=(x-4)/((x-4)(x-6))-(x-6)/((x-4)(x-6))2/((x-7)(x-5))-(x-7)=2/((x-4)(x-6))(x-7)(x-5))=(x-4)(x-6)x^2-12x+35=x^2-10x+242x=9x=2/9

Excuse me, 14 times 5-5x = 50-x. who can tell me how to solve this equation? Thank you very much

-5X+X=50-14*5
4X = 20 (merge similar items, multiply both sides of equal sign by - 1)
X=4

Solve the equation 3.14 * 6 / 5x ^ 2-3.14 * x ^ 2 = 44

3.14*6/5x^2-3.14*x^2=44
3.14x(6/5-1)x^2=44
3.14x1/5x^2=44
0.628x^2=44
x^2=44÷0.628
x^2= 70
x≈8.37

3.5X+2.5(14-X)=4

3.5X+2.5(14-X)=4
3.5x+35-2.5x=4
3.5x-2.5x=4-35
x=-31

How to solve the equation of 5x-6 = 14?

5x-6=14
5x=14+6
5x=20
x=4