1.Rozwiąż równania: a) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7) b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7) c) (4x-5)+(x-7)-(2x-8)=-(3+4)-(x-6) d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x) BŁAGAM POMÓZCIE !!!!!!!!!! NA DZIS DAM NAJ!
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a) (3-2x)-(x+4)-(2x+5)=(3x-4)-(5x+7)
3-2x-x-4-2x-5=3x-4-5x-7
-2x-x-2x-3x+5x=-4-4-3+4+5
-3x=-5/: (-3)
x=3/5
b) (4-x)-(2x+3)+(x-4)=-(2x-3)-(x+7)
4-x-2x-3+x-4=-2x+3-x-7
-x-2x+x+2x+x=3-7-4+3+4
x=-1
c) (4x-5)+(x-7)-(2x-8)=-(3+4)-(x-6)
4x-5+x-7-2x+8=-3-4-x+6
4x+x-2x+x=-3-4+6+5+7-8
4x=3 / 4
x=3/4
d) -(4-2x)-(2x+4)=(3x-1)+(2x-5)-(7-3x)
-4+2x-2x-4=3x-1+2x-5-7+3x
2x-2x-3x-2x-3x=-1-5-7+4+4
-8x=-5 /: (-8)
x=5/8