Co ....? ...ROZWIĄZYWANIE RÓWNAŃ>>>! Pani zadała a ja nie umiem...! :(
Pomoże ktos? ....
a) 2(x+3)-3(x+1)=x-13
b)1+2[3(x-1)-5(2x-3)]=2x-7
c)5(x-1)-2(x+3)=3x+2
d)3(2x-3)+2(x-4)=4(x-2)-3(5-x)
e)4(x-2)-5(3x-9)=0
f)2(3-x)+5=3-2(x-4)
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a) 2(x+3)-3(x+1)=x-13
2x+6-3x-3=x-13
-x-x=-13-6-3
-2x=-22 //:(-2)
x=11
b)1+2[3(x-1)-5(2x-3)]=2x-7
1+2[3x-3-10x+15]=2x-7
1+6x-6-20x+30=2x-7
-14x-2x=-7-1+6-30
-16x=-32 //:(-16)
x=2
c)5(x-1)-2(x+3)=3x+2
5x-5-2x-6=3x+2
3x-3x=2+5+6
0=13
d)3(2x-3)+2(x-4)=4(x-2)-3(5-x)
6x-9+2x-8=4x-8-15+3x
8x-4x-3x=-23+9+8
x=-5
e)4(x-2)-5(3x-9)=0
4x-8-15x+45=0
-11x=-45+8
-11x=-37 //:(-11)
x=3
f)2(3-x)+5=3-2(x-4)
6-2x+5=3-2x-8
-2x+2x=-5-5-6
0=-16