Równania kl.
1 Zad1. a) 6x=3
, b) -3x=7
, c) 2x= 1/5
d)1,2x=4,8
e) 1/3x=3 f) -3/5x - -5
g) 3/4x = -4/9
h) 0,1x=-7
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Zad2. c) 10=4-2x
d) -(2x-1) = 4
e) 2(x+1) =x
f) 2t - (3t + 1) = 6
g) -(4+x) = 2(3-x)
h) 3(y+6) - y = 2(y+9)
i) (x-7) -2(3x+5) = 3
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zad.1
a)6x=3 /6
x=0,5
b) -3x = 7 /(-3)
x=-2 i 1/3
c) 2x= 1/5 /2
x=0,1
d) 1,2x=4,8 /1,2;)
2. 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
g) -(4+x)=2(3-x)
-4x-x=6-2x
-4x-x+2x=6
-3x=6 /:-3
x=-2
h) 3(y+6)-y=2(y+9)
3y+18-y=2y+18
3y-y-2y=18-18
0=0
i) (x-7)-2(3x+5)=3
x-7-6x-10=3
x-6x=3+7+10
- 5x=20 /:-5
x=-4