1.Rozwiąż równanie .
a) 11/15x + 1/5 = 3
b) 0,4z - 1 = 0,5
c) 5/6y - 0,5 = 0,25y - 2/3
a)11/15x+1/5=3 *15
11x+3=45 -3
11x=42
x= 3. [81]
b)0.4z-1=0.5
4/10z-1=5/10
4/10z= 5/10 +1 *10
4z=15
z=3.75
5/6y- 1/4y= 2/3 +1/2
20/24y-6/24y= 16/24 + 12/24
14/24y= 28/24
14y=28
y=2
a)11/15x +1/5 = 3
55 + 15x= 3
15x=-52
x=-3⁷/₁₅
b) 0,4z=0,5+1
0,4z=1,5 /0,4
z=3,75
c)5/6 y - 0,5 = 0,25 y - 2/3
5/6y - 1/4y = -2/3+ 1 / 5
10/12y-3/12y= -10/15+3/15
7/12y=-7/15 /*12/7
y=-15*12
y=-180
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a)11/15x+1/5=3 *15
11x+3=45 -3
11x=42
x= 3. [81]
b)0.4z-1=0.5
4/10z-1=5/10
4/10z= 5/10 +1 *10
4z=15
z=3.75
c) 5/6y - 0,5 = 0,25y - 2/3
5/6y- 1/4y= 2/3 +1/2
20/24y-6/24y= 16/24 + 12/24
14/24y= 28/24
14y=28
y=2
a)11/15x +1/5 = 3
55 + 15x= 3
15x=-52
x=-3⁷/₁₅
b) 0,4z=0,5+1
0,4z=1,5 /0,4
z=3,75
c)5/6 y - 0,5 = 0,25 y - 2/3
5/6y - 1/4y = -2/3+ 1 / 5
10/12y-3/12y= -10/15+3/15
7/12y=-7/15 /*12/7
y=-15*12
y=-180