POOOMOCY ! ROZWIĄŻ RÓWNANIA:
a)5x+13=23
b)x+5=-2
c)-5x +3 = -12
d)-1,5x+2=9,5
e)1/2y+3=7
f)3/5a+2/5=4
g)3/4x=-4/9
h)2x-2=7-x
I)10+4-2x
j)x+2x=x+9
k)y+(2y-5)=11-y
l)3a+y=a+7+9a+1)
m)-3/5x=-5
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a)5x+13=23
5x=23-13=10 /:5
x = 2
b)x+5=-2
x=-2-5=-7
c)-5x +3 = -12
-5x = -12-3 = -15 /:(-5)
x = 3
d)-1,5x+2=9,5
-1,5x=9,5-2 = 7,5 /:(-1,5)
x = -5
e)1/2y+3=7
1/2y=7-3=4 /:1/2
y = 8
f)3/5a+2/5=4
3/5a=4-2/5 = 20/5-2/5=18/5 /*5/3
a = 18/5*5/3
a = 6
g)3/4x=-4/9 /*4/3
x = - 16/27
h)2x-2=7-x
3x=9 /:3
x = 3
I)10+4=2x /:2
7=x
j)x+2x=x+9
2x=9 /:2
x=4,5
k)y+(2y-5)=11-y
4y=11+5=15 /:4
y=15/4=3 3/4
l)3a+y=a+7+9a+1)?????
m)-3/5x=-5 /*(-5/3)
x=25/3 = 8 1/3