rozwiąrz ruwnania
a x+75=57
b1 2/3+y=2 3/4
cx-34=-35
d3x=2x+1/7
e2-x=-2x
w b to jeden dwie trzecie i dwie trzy czwarte
a)x+75=57
x=57-75
x=-22
b)1 2/3+y=2 3/4
y=2 3/4-1 2/3
y=11/4-5/3
y=33/12-20/12
y=13/12=1 1/12
c)x-34=-35
x=-35+34
x=-1
d)3x=2x+1/7I*7
7*3x=7*2x+7*1
21x=14x+7
21x-14x=7
7x=7I:7
x=1
e)2-x=-2x
2=-2x+x
2=-1xI:(-1)
-2=x
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a)x+75=57
x=57-75
x=-22
b)1 2/3+y=2 3/4
y=2 3/4-1 2/3
y=11/4-5/3
y=33/12-20/12
y=13/12=1 1/12
c)x-34=-35
x=-35+34
x=-1
d)3x=2x+1/7I*7
7*3x=7*2x+7*1
21x=14x+7
21x-14x=7
7x=7I:7
x=1
e)2-x=-2x
2=-2x+x
2=-1xI:(-1)
-2=x