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x = -14
5y=13 / :5
y= 2 i 3/5
-3/4z = 3/4 / *4
-3z = 3 / : -3
z = -1
-1/6u = 1/3 / *6
-u = 2 / * (-1)
u = -2
y*12 = -60 / : 12
y = -5
22(-c)= - 66 / :22
-c = -3
c = 3
-2w = - 1/2 /: (-2)
2 = 1/4
5 a = 0
a = 0
-7b = 7/8 / : (-7)
b = 1/8
3x + 1/7 = x-1
2x = 1i 1,7
x = 4/7
1 3/4 - 3x = - 3 1/4 - 4 x (Przenosimy niewiadome i liczby na jedną stronę :) wszystko się ładnie skaraca bo po zmianie stron zmienia swój znak)
x = - 5
x=-14
b) 5y=13 /:5
y=2 i 3/5
c) -3/4z = 3/4 /:(- 3/4)
z=-1
d) -1/6u = 1/3 / :(-1/6)
u=-2
e) y*12 = -60
12y=-60/:12
y=-5
f ) -2w = - 1/2 /:(-2)
w=1/4
g ) 5a = 0/:5
a=0
h ) -7b = 7/8 /:(-7)
b=-1/8
i ) 22(-c)= - 66
-22c=-66/:(-22)
c=3
j ) 3x + 1/7 = x-1/*7
21x+1=7x-7
21x-7x=-7-1
14x=-8 /:14
x=-4/7
k ) 1 3/4 - 3x = - 3 1/4 - 4 x
7/4-3x=-13/4-4x/*4
7-12x=-13-16x
-12x+16x=-13-7
4x=-20/:4
x=-5