Rozwiąż równania.
a) 9 + x =1 7/8
b) -8y =5
c) x - 4/5 =0,8
d) 6 1/8y =1
e) - 2,2 + x = 6,1
f) - 1/3y = 10
g) 8a + 4 = 36
h) 8/9 k + 1/3 = 3
i) 6b - 3 = -9
j) - 3/4 - 1/4 l = 2,25
k) - 2,5c - 8 = 17
l) 0,4m - 2 = -6
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a) 9 + x = 1 7/8
x= 9 - 1 7/8
x = 7 1/8
b) -8y = 5 / :(-8)
y = - 5/8
c) x - 4/5 = 0,8
x=4/5+4/5
x= 8/5
x= 1 3/5
d) 6 /8y = 1 /: 6/8
y = 8/6
e) -2,2 + x = 6,1
x = 6,1 + 2,2
x = 8,3
f) -1/3y = 10 / : (-1/3)
y = - 30
g) 8a + 4 = 36
8a = 32 / : 8
a = 4
h) 8/9 k + 1/3 = 3
8/9 k = 2 2/3 / :8/9
k = 8/3 * 9/8
k = 3
i ) 6b - 3 = -9
6b = -6 / : 6
b = -1
j) -3/4 - 1/4l = 2,25
- 1/4 l = 2 1/4 + 3/4
- 1/4 l = 3 / :(-1/4)
l = - 12
k ) - 2,5c - 8 = 17
- 2,5c = 25 / : (-2,5)
c = -10
l) 0,4m - 2 = -6
0,4 m = -4 / : 0,4
m = - 10