Question

A) 1/2x - 3/4[x-(4x+1)]=1- x+1/4
b) 2/3(3x-1)-3/2[2x+3(x-2)]=1

Answer 1

A) 1/2x - 3/4[x-(4x+1)]=1- x+1/4
1/2x - 3/4 [x-4x-1] = 1-x + 1/4
1/2x - 3/4x + 3x + 3/4 = -x +5/4
3 i 3/4x = 1/2
x= 2/15

b) 2/3(3x-1)-3/2[2x+3(x-2)]=1
2x-2/3-3x-9/2x+9=1
-x-9/2x=-8+2/3
x=25/12=2 i 1/12

Answer 2

A) 1/2x - 3/4[x-(4x+1)]=1- x+1/4
1/2x - 3/4[x-4x-1]=1-x+1/4
1/2x - 3/4x - 3x- 3/4=1-x+1/4 /*4
2x-3x-12x-3=4-4x+1
2x-3x-12x+4x=1+3
-9x=4 /:(-9)
x= -4/9

b) 2/3(3x-1)-3/2[2x+3(x-2)]=1
2x-2/3-3/2[2x+3x-6]=1
2x-2/3-3x-4,5 x+9=1
-2/3+9-1=-2x+3x+4,5x
-2/3+27/3-1=5,5x
25/3-1=5,5x
8 i 1/3-1=5,5x
7 i 1/3=5,5x / :5,5
x=1 i 1/3

Na pewno dobrze:)

Answer 3

A) 1/2x-3/4[x-[4x+1]]=1-x+1/4
1/2x-3/4[-3x+1-x]=1-x+1/4/*4
2x-3[-3+1-x]=4-4x+1
2x+6-3+x=4-4x-1
2x+x+4x=-6+3+4-1
7x=0
brak rozwiazania rownania
b) 2/3[3x-1]-3/2[2x+3[x-2]]=1/*6
4[3x-1]-9x[2x+3[1-2]]=6
12x-4-9x[2x+3-6]=6
12x-4-18x-27x+54=6
12x-18x-27x=4-54+6
21x=-44//21
x=-2i2/21