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1/2x - 3 + 1 = 3/4x + 4,5 - 5
1/2x - 4 = 3/4x + (-0,5) / -1/2
-4 = 1/2x + (-0,5) / +0,5
-3,5 = 1/2x / :1/2
- 7 = x
b. =
1.5y + 3 + 2y = 3y + 1,5 - 5
3,5y + 3 = 3y - 3, 5
0,5 y = -6,5 / :0,5
y = -13
3. a =
2x - 3 = 5 + x
x = 8
b. =
6x + 7 = 6 ( x + 7 )
6x + 7 = 6x + 42
x = 35
c. =
³/₅ x + 1 = 2
³/₅x = 1 / :3/5
x= 1,6(6)
2x-x=5+3
x=8
b) 6x+7=6(x+7)
6x+7=6x+7
0=0
3/5x+1=2
3/5x=1/:3/5
x=5/3
spr. 3/5*5/3+1=2
1+1=2
2=2