1.1.Rozwiąż równania
a)2x+7=19
b)-3x+1=11
c)4x-17=0
d)5x+3=-12
e)12x+7=9x+10
f)8-2x=5x-5
g)2x-3+x=-3+3x
h)2x+12=30-3x
1.2.Rozwiąż równanie
a)5(x-1)+2x=2(x+2)+6
b)x+4-5(x-8)=x-6
c)6x-(x+1)=6
d)2(x-1)+3(x-2)=7
e)3(x+2)+2(2X-3)=x-12
f)x(x-2)-(X2-2x-3)=2x+1
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2x=19-7
2x=12
x=6
b)-3x+1=11
-3x=11-1
-3x=10 /*(-3)
x=-10/3
x= -3 1/3
c)4x-17=0
4x=17
x=4.25
d)5x+3=-12
5x=-12-3
5x=-15
x=-3
e)12x+7=9x+10
12x-9x=10-7
3x=3
x=1
f)8-2x=5x-5
-2x-5x=-5-8
-7x=-13
x=1 6/7
g)2x-3+x=-3+3x
3x-3=-3+3x
3x-3x=-3+3
0=0
h)2x+12=30-3x
2x+3x=30-12
5x=18
x=3.6
1.2.Rozwiąż równanie
a)
5(x-1)+2x=2(x+2)+6
5x-5+2x=2x+4+6
7x-5=2x+10
7x-2x=10+5
5x=15
x=3
b)
x+4-5(x-8)=x-6
x+4-5x+40=x-6
-4x+44=x-6
-5x= -50
x= 10
c)
6x-(x+1)=6
6x-x-1=6
5x=6+1
5x=7
x=1.4
d)
2(x-1)+3(x-2)=7
2x-2+3x-6=7
5x-8=7
5x=7+8
5x=15
x=3
e)
3(x+2)+2(2x-3)=x-12
3x+6+4x-6=x-12
7x=x-12
7x-x=-12
6x=-12
x=-2
f)
x(x-2)-(x²-2x-3)=2x+1
x² - 2x - x² + 2x + 3 = 2x + 1
3=2x+1
2=2x
x=1