Odpowiedź:
5(x-7)+2= -28
5x-35+2= -28
5x= -28-2+35
5x=5 |:5
x=1
2(x-1)+3(x+1)=26
2x-2+3x+3=26
2x+3x=26-3+2
5x=25 |:5
x=5
4(3-x)+9=7(2+x)+29
12-4x+9=14+7x+29
-4x-7x=14+29-9-12
-11x=22 |:(-11)
x= -2
9=5x+6-5(x-0,6)
5x+6-5(x-0,6)=9
5x+6-5x+3=9
5x-5x=9-3-6
0=0
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Odpowiedź:
5(x-7)+2= -28
5x-35+2= -28
5x= -28-2+35
5x=5 |:5
x=1
2(x-1)+3(x+1)=26
2x-2+3x+3=26
2x+3x=26-3+2
5x=25 |:5
x=5
4(3-x)+9=7(2+x)+29
12-4x+9=14+7x+29
-4x-7x=14+29-9-12
-11x=22 |:(-11)
x= -2
9=5x+6-5(x-0,6)
5x+6-5(x-0,6)=9
5x+6-5x+3=9
5x-5x=9-3-6
0=0