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y= 2 3/4 - 1 2 /3
y= 2 9/12 - 1 8/12
y= 1 1/12
c)x-34= (-35)
x= -35 +34
x=-1
d) 3x= 2x+1/7
3x-2x= 1/7
x=1/7
e)3-x= (-2x)
-x+2x= -3
x=-3
f) 5y=13 /:5
y=2,6
g) 1/7x = (-2) /*7
x=-14
h) -7b = 7/8 /:(-7)
b=0,125
i) 7x+7 =35
7x= 35-7
7x= 28 /:7
x=4
j)2-x=5-2x
-x+2x=5-2
x=3
k)69-x= x+96
-x-x=96-69
-2x= 27 /:(-2)
x= - 13,5
l)1/2x+5= x+8
1/2x - x= 8-5
-1/2x= 3 /*(-2)
x=-6
pozdrawiam :)
5/3 + y = 11/4 | *12
12*5/3 + 12y = 12*11/4
20 + 12y = 33
12y = 33 - 12
12y = 13|:12
y = 13/12 = 1 1/12
c)x-34= (-35)
x = -35 + 34
x = -1 |: 1
x = -1
d) 3x= 2x+1/7|*7
21x = 14x + 1
21x - 14x = 1
7x = 1|:7
x = 1/7
e)3-x= (-2x)
-x + 2x = -3
x = -3|: 1
x = -3
f) 5y=13|:5
y = 13/5 = 2 3/5
g) 1/7x = (-2) |*7
1x = -14 |:1
x = -14
h) -7b = 7/8 |*8
-56b = 7 |: (-56)
b = -7/56 = -1/8
i) 7x+7 =35
7x = 35 - 7
7x = 28|:7
x = 4
j)2-x=5-2x
-x + 2x = 5 - 2
x = 3|:1
x = 3
k)69-x= x+96
-x - x = 96 - 69
-2x = 27|: (-2)
x = -27/2 = -13 1/2
l)1/2x+5= x+8 |*2
x + 10 = 2x + 16
x - 2x = 16 - 10
-x = 6 |:(-1)
x = -6
y = 2i9/12 - 1i8/12
y = 1i1/12
c) x = -35 + 34
x = -1
d) 3x-2x=1/7
x=1/7
e) x+2x=-3
3x=-3/:3
x=-1
f) 5y=13/:5
y=2i#/5
g) 1/7x=-2/*7
x=-14
h) -7b=7/8 /:(-7)
b=7/56
i)7x=35-7
7x=28/:7
x=4
j) -x+2x=5-2
x=3
k) -x-x=96-69
-2x=27/:(-2)
x=-13,5
l) 1/2x-x=8-5
-1/2x=3/*(-2)
x=-6