Rozwiąż pytania:
a) -55 + x = 101
b) 64 + x = 46
c) x + 1/4 = 1/2
d) x - 34 = -35
e) 3 - x = -2x
f) 3x + 1/7 = 2x
g) 4x - 5 = 3x - 1
h) 4 + 2x = 2 + x
i) 13/4 + x = -3 1/4
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a) -55 + x = 101 po uproszczeniu:
x-55=101 /-101
x-101-55=0
x-156=0 /+156
x=156
b) 64 + x = 46 po uproszczeniu:
x+64=46 /-46
x-46+64=0
x+18=0 /-18
x= -18
c) x + 1/4 = 1/2 /-1/2
x+1/4-1/2=0
x-1/4=0 /+1/4
x=1/4
d) x - 34 = -35 /+35
x-34+35=0
x+1=0 /-1
x= -1
e) 3 - x = -2x /+ (-2x)
3-x-(-2x)=0
x+3=0 /-3
x= -3
f) 3x + 1/7 = 2x /-2x
3x-2x+1/7=0
x+1/7=0 /-1/7
x= -1/7
g) 4x - 5 = 3x - 1 /-3x-1
4x-3x-5+1=0
x-4=0 /+4
x=4
h) 4 + 2x = 2 + x po uproszczeniu:
2x+4=x+2 /-x+2
2x-x-2+4=0
x+2=0 /-2
x= -2
i) 13/4 + x = -3 1/4
13/4+x+13/4=0
13/2+x=0
13/2=6,5
x= -13/2
x= -6,5
x=151
b) 64+x=46 ¦-64
x=-18
c) x+1/4=1/2 ¦-1/4
x=1/4
d) x-34=-35 ¦+35
x=1
e) 3-x=-2x ¦+x
3=-x ¦:-1
-3=x
f) 3x+1/7=2x ¦-3x
1/7=-x ¦:-1
-1/7=x
g) 4x-5=3x-1 ¦+5
4x=3x+4 ¦-3x
x=4
h) 4+2x=2+x ¦-4
2x=-2+x ¦-x
x=-2
i) 13/4+x=-3 1/4
13/4+x=-13/4 ¦-13/4
x=-26/4
x=-6