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a)
3x-5 = 4+2x
3x-2x = 4+5
x = 9
b)
-5x+10 = -2x-8
-5x+2x = -8-10
-3x = -18 |:(-3)
x = 6
c)
-5x-17 = -9x+3
-5x+9x = 3+17
4x = 20 |:4
x = 5
d)
7x+14 = 5x-22
7x-5x = -22-14
2x = -36 |:2
x = -18
e)
2x-4+5x = x+2
7x-4 = x+2
7x-x = 2+4
6x = 6 |:6
x = 1
f)
-3+2x-6 = 3-4x
2x-9 = 3-4x
2x+4x = 3+9
6x = 12 |:6
x = 2
g)
7x+2 = 5+3x+9
7x+2 = 3x+14
7x-3x = 14-2
4x = 12 |:4
x = 3
h)
-5x+12+x = 2x-12
-4x+12 = 2x-12
-4x-2x = -12-12
-6x = -24 |:(-6)
x = 4
zad2.
a)
2(x-3)+3(4-x) = 5
2x-6+12-3x = 5
-x+6 = 5
-x = 5-6
-x = -1 |:(-1)
x = 1
b)
3(x-4)-2(2x-5) = -4
3x-12-4x+10 = -4
-x-2 = -4
-x = -4+2
-x = -2 |:(-1)
x = 2
c)
2(x-4)-5(x+3) = 2
2x-8-5x-15 = 2
-3x-23 = 2
-3x = 2+23
-3x = 25 |:(-3)
x = -8i1/3
d)
-2(x+3)+4(2x+3) = -6
-2x-6+8x+12 = -6
6x+6 = -6
6x = -6-6
6x = -12 |:6
x = -2
zad3.
a)
(4-2x)-(x+3) = (x-5)+(-3-x)
4-2x-x-3 = x-5-3-x
-3x+1 = -8
-3x = -8-1
-3x = -9 |:(-3)
x = 3
b)
(3-2x)+(3x+4) = -(3-3x)+(5x+4)
3-2x+3x+4 = -3+3x+5x+4
x+7 = 8x+1
x-8x = 1-7
-7x = -6 |:(-1)
7x = 6 |:7
x = 6/7
c)
-(x+3)+(2x-2) = (1+4x)+(3+x)
-x-3+2x-2 = 1+4x+3+x
x-5 = 5x+4
x-5x = 4+5
-4x = 9 |:(-4)
x = -2,25
d)
-(x+3)-(2x+8) = (-3-2x)+(2x+1)
-x-3-2x-8 = -3-2x+2x+1
-3x-11 = -2
-3x = -2+11
-3x = 9 |:(-3)
x = -3
a)3x-5=4+2x
3x-2x=5+4
x=9
b)-5x+10=-2x-8
-5x+2x=-10-8
-3x=-18 /:(-3)
x=6
c)-5x-17=-9x+3
-5x+9x=17+3
4x=20 /:4
x=5
d)7x+14=5x-22
7x-5x=-14-22
2x=-36 /:2
x=-18
e)2x-4+5x=x+2
7x-x=4+2
8x=6 /:8
x=6/8
x=3/4
f)-3+2x-6=3-4x
2x+4x=9+3
6x=12 /:6
x=2
g)7x+2=5+3x+9
7x-3x=14-2
4x=12 /:4
x=3
h)-5x+12+x=2x-12
-4x-2x=-12-12
-6x=-22 /:(-6)
x=3 i dwie trzecie
zad2.Rozwiąż równania
a)2(x-3)+3(4-x)=5
2x-6+12-3x=5
-x=5-6
-x=-1 /:(-1)
x=1
b)3(x-4)-2(2x-5)=-4
3x-12-4x+10=-4
-x=-4+2
-x=-2 /:(-1)
x=2
c)2(x-4)-5(x+3)=2
2x-8-5x-15=2
-3x=23+2
-3x=25 /:(-3)
x=-8 i jedna trzecia
d)-2(x+3)+4(2x+3)=-6
-2x-6+8x+12=-6
6x=-6-6
6x=-12 /:6
x=-2
zad3. Rozwiąż równania
a)(4-2x)-(x+3)=(x-5)+(-3-x)
4-2x-x-3=x-5-3-x
-2x-x=-1-5-3
-3x=-9 /:(-3)
x=3
b)(3-2x)+(3x+4)=-(3-3x)+(5x+4)
3-2x+3x+4=-3+3x+5x+4
x-3x-5x=-7-3+4
-7x=10 /(-7)
x=minus dziesiec siodmych(-10/7)
c)-(x+3)+(2x-2)=(1+4x)+(3+x)
-x-3+2x-2=1+4x+3x+x
x-8x=5+1
-7x=6 /:(-7)
x=minus szesc siodmych(-6/7)
d)-(x+3)-(2x+8)=(-3-2x)+(2x+1)
-x-3-2x-8=-3-2x+2x+1
-3x=11-3+1
-3x=9 /:(-3)
x=-3
Mam nadzieje ze bardzo ci pomoglem ;)
a)3x-5=4+2x
3x-2x=5-4
x=1
b)-5x+10=-2x-8
-5x+2x=-10-8
-3x=-18
x=6
c)-5x-17=-9x+3
-5x+9x=17+3
4x=20
x=5
d)7x+14=5x-22
7x-5x=-14-22
2x=-36
x=-18
e)2x-4+5x=x+2
2x+5x-x=4+2
6x=6
x=1
f)-3+2x-6=3-4x
2x+4x=3+6+3
6x=12
x=2
g)7x+2=5+3x+9
7x-3x=-2+5+9
4x=-3+9
4x=6
x=6/4
x=1 i 1/2
h)-5x+12+x=2x-12
-5x+x-2x=-12-12
-6x=-24
x=4
zad2.Rozwiąż równania
a)2(x-3)+3(4-x)=5
2x-6+12-3x=5
2x-3x=6-12+5
-x=-1
b)3(x-4)-2(2x-5)=-4
3x-8-4x-10=-4
3x-4x=8+10-4
x=14
c)2(x-4)-5(x+3)=2
2x-8-5x+15=2
2x-5x=8-15+2
-3x=-7+2
-3x=-5
x=5/3
x=1 i 2/3
d)-2(x+3)+4(2x+3)=-6
-2x+6+8x+12=-6
-2x+8x=-6-12-6
6x=-24
x=-4