2.
a)
-3x=2x-10
-3x-2x=-10
-5x=-10|:(-5)
x=2
b)
2x-2=7-7
2x=2|:2
x=1
c)
10=4-2x
-2x+4=10
-2x=6|:(-2)
x=-3
d)
-(2x-1)=4
-2x+1=4
-2x=4-1
-2x=3|:(-2)
x=-1,5
e)
2(x+1)=x
2x+2=x
2x-x=-2
x=-2
f)
2t-(3t+1)=6
2t-3t-1=6
-t=6+1
-t=7|:(-1)
t=-7
-3x = 2x - 10
-3x -2x = -10
-5x = -10
x=-10: -5
b) 2x - 2 = 7-7
2x = 2
10 = 4-2x
2x = 4-10
2x = -6
-(2x-1) = 4
-2x = 3
x=-3/2
2(x+1) = x
2x+2 = x
2x-x = -2
2t-(3t+1) = 6
2t -3t-1=6
-t = 7
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2.
a)
-3x=2x-10
-3x-2x=-10
-5x=-10|:(-5)
x=2
b)
2x-2=7-7
2x=2|:2
x=1
c)
10=4-2x
-2x+4=10
-2x=6|:(-2)
x=-3
d)
-(2x-1)=4
-2x+1=4
-2x=4-1
-2x=3|:(-2)
x=-1,5
e)
2(x+1)=x
2x+2=x
2x-x=-2
x=-2
f)
2t-(3t+1)=6
2t-3t-1=6
-t=6+1
-t=7|:(-1)
t=-7
a)
-3x = 2x - 10
-3x -2x = -10
-5x = -10
x=-10: -5
x=2
b) 2x - 2 = 7-7
2x = 2
x=1
c)
10 = 4-2x
2x = 4-10
2x = -6
x=-3
d)
-(2x-1) = 4
-2x+1=4
-2x = 3
x=-3/2
e)
2(x+1) = x
2x+2 = x
2x-x = -2
x=-2
f)
2t-(3t+1) = 6
2t -3t-1=6
-t = 7
t=-7