Rozwiąż równanie:
x+75=57
1 i 2/3 + y=2 i 3/4
t-34=-35
3x=2x+1/7
3-x=-2x
5y=13
1/7x=-2
-7b=7/8
7a+7=35
2-x=5-2x
69-x=x+96
1/2c+5=c+8
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x+75=57
x= 57 - 75
x= -18
1 2/3 + y=2 3/4
y= 2 3/4 - 1 2/3
y=1 1/12
t-34=-35
t= -35 +34
t= -1
3x=2x+1/7
3x -2x = 1/7
x= 1/7
3-x=-2x
-x +2x = -3
x= -3
5y=13 /:5
y= 2,6
1/7x=-2 /: 1/7
x= -14
-7b=7/8 /:(-7)
b= -1/8
7a+7=35
7a= 35-7
7a = 28/:7
a= 4
2-x=5-2x
-x+2x = 5-2
x= 3
69-x=x+96
-x-x= 96-69
-2x =27 /: (-2)
x= -13,5
1/2c+5=c+8
1/2c-c = 8-5
-1/2c = 3 /: (-1/2)
c= -6
a) x+75=57
x=57-75
x=-18
b) 1⅔+y=2¾
y=2¾-1⅔
y=11/4-5/3
y=33/12-20/12
y=13/12
y=1 i 1/12
c) t-34=35
t=-35+34
t=-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=13/5
y= 2⅗
g) 1/7x=-2 /*7
x=-14
h) -7b=⅞ /:(-7)
b=-49/8
b=-6⅛
i)7a+7=35
7a=35-7
7a=28 /:7
a=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=13½
l) ½c+5=c+8
1/2c-c=8-5
-½c=3 /*(-2)
c=-6