Rozwiąż równania:
(takie rzeczy typu 1/2 czy 2/5 to ułamki)
a) x - 4/5 = 0,8
b) 6 1/8y = 1
c) -2,2 + x = 6,1
d) -1/3y = 10
e) 8a + 4 = 36
f) 8/9k + 1/3 = 3
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A] x-4/5=0,8
x-0,8=0,8
x=0,8+0,8
x=1,6
b] 6 1/8y=1 /:6 1/8
y=8/49
c] -2,2+x=6,1
x=6,1+2,2
x=8,3
d] -1/3y=10 /:-1/3
y=-30
e] 8a+4=36
8a=36-4
8a=32 /:8
a=4
f] 8/9k+1/3=3
8/9k=3-1/3
8/9k=2/3 /:8/9
k=3/4