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2014-03-25T19:33:43+02:00
B)3x+2=5x+6
3x-5x=6-2
-2x=4
x=-2
c)2x-6=3x+6
2x-3x+12
-1x=12
x=-12
d)4x+11+5(x+4)-4x+3
4x+11+5x+20-4x+3<<<<<se reduc 4x si - 4x ii tai
5x=-34
x=-34 supra 5
e)7(x+2)-3x-1=6(x+4)-4x+3
7x+12-3x-1=6x+24-4x+3
4x+11=2x+27
4x-2x=27-11
2x=16
x=8
f)4(x+6)-2(x+16)=4-3(x+4)
4x+24-2x-32=4-3x-12
2x-8=-3x-8
2x+3x=-8+8
5x=0
x=0

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