Jeszcze 3 rownania błagam bo mam taka babe wredna od matmy ze masakra a ona sie jescze na mnie uwzieła mam zagrozenie z matmy i mnie nie przepusci błagam o pomoccc !!
daje naaj
1. x - 3 (x+5) =9+3 (5 -7 )
2. 6-X -(9x +5 )=2 ( x+4)
3. 3(x+2) =7- (x-9)
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1) x-3(x+5)=9+3(5x-7) pewnie w nawiasie mialo byc 5x!!!!!!!!!!!1
x-3x-15=9+15x-21
x-3x-15x=9-21+15
-17x=3 /:(-17)
x -3/17
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2) 6-x-(9x+5)=2(x+4)
6-x-9x-5=2x+8
-x-9x-2x=8+5-6
-12x=7 /:(-12)
x= -7/12
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3) 3(x+2)=7-(x-9)
3x+6=7-x+9
3x+x=7+9-6
4x=10 /:4
x=2,5
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