Question

Z każdego podanych niżej wzorów wyznacz x .

p=abx

r= ax/b

s=a/bx

t=1/abx

y=2t-3x

y=2(x-1)

y=x-1/2

y=2/x-1

p=1/3(a2 +2ax)

Answer 1

p=abx  //:ab

p/ab=x

 

r=ax/b  //*b

br=ax  //:a

br/a=x

s=a/bx  //*x

sx=a/b  //:s

x=a/bs

t=1/abx  //*x

tx=1/ab  //:t

x=1/abt

y=2t-3x  //-2t

-2t+y=-3x  //:(-3)

-2t+y/-3=x

y=2(x-1)

y=2x-2  //+2

2+y=2x  //:2

2+y/2=x

y=x-1/2  //*2

2y=x-1  //+1

2y+1=x

y=2/x-1  //*1/2

1/2y=1/x-1

1/2y=1(x+1)

1/2y=x+1  //-1

1/2y-1=x

p=1/3(a2 +2ax)

p=2a/3+2ax/3  //:2a/3

3p/2a=2ax/3  //*3

9p/2a=2ax  //:2a

9p/4a^2=x