Odpowiedź:
Szczegółowe wyjaśnienie:
x+12=60
x=60-12
x=48
80%x=40
20%x=10
x=10*5
x=50
4x=120
x=30
5(x - 6) = x + 6
5x-30=x+6
5x-x=6+30
4x=36
x=9
0,3x - 1,2 = 1,4x +1
0,3x-1,4x=1-1,2
-1,1x=0,2
1,1x=0,2
(x + 2)(x - 1) = x² + 1
x²-x+2x-2= x²+1
x²- x²-x+2x=1+2
x=3
3x=48+x
3x-x=48
2x=48
x=24
9x - 4x - (x + 4)= 2(x - 1)
9x-4x-x-4=2x-2
9x-4x-x-2x=-2+4
2x=2
x=1
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Odpowiedź:
Szczegółowe wyjaśnienie:
x+12=60
x=60-12
x=48
80%x=40
20%x=10
x=10*5
x=50
4x=120
x=30
5(x - 6) = x + 6
5x-30=x+6
5x-x=6+30
4x=36
x=9
0,3x - 1,2 = 1,4x +1
0,3x-1,4x=1-1,2
-1,1x=0,2
1,1x=0,2
(x + 2)(x - 1) = x² + 1
x²-x+2x-2= x²+1
x²- x²-x+2x=1+2
x=3
3x=48+x
3x-x=48
2x=48
x=24
9x - 4x - (x + 4)= 2(x - 1)
9x-4x-x-4=2x-2
9x-4x-x-2x=-2+4
2x=2
x=1