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4+3(x-1)=7
7-2(y+2)=11
3+5(2z+3)=8
5-3(5x-1)=23
6z+2(4-z)=2z
4+3(x-1)=7 4+3x-3=7 3x=7-4+3 3x=6 3x=6/3 x=2
7-2(y+2)=11 7-2y-4=11 -2y=11-7+4 -2y=8/-2 y=-4
3+5(2z+3)=8 3+10z+15=8 10z=8-3-15 10z=-10/10 z=-1
5-3(5x-1)=23 5-15x+3=23 -15x=23-5-3 -15x=15/-15 x=-1
6z+2(4-z)=2z 6z+8-2z=2z 6z-2z-2z=-8 2z=-8/2 z=-4
Myślę że pomogłem :P
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4+3(x-1)=7 4+3x-3=7 3x=7-4+3 3x=6 3x=6/3 x=2
7-2(y+2)=11 7-2y-4=11 -2y=11-7+4 -2y=8/-2 y=-4
3+5(2z+3)=8 3+10z+15=8 10z=8-3-15 10z=-10/10 z=-1
5-3(5x-1)=23 5-15x+3=23 -15x=23-5-3 -15x=15/-15 x=-1
6z+2(4-z)=2z 6z+8-2z=2z 6z-2z-2z=-8 2z=-8/2 z=-4
Myślę że pomogłem :P