1/4x-(4+1/2x)=-2x-5/8=5x-18/12x-1/2=4,6+3,1/2xznajdź liczbę odpowiadająco x
a)1/4x-(4+1/2x)=-21/4x - 4 - 1/2x = -2 /*4x - 16 - 2x = -8 x - 2x = -8 + 16-x = 8 /:(-1)x = -8b)x-5/8=5x-18/12 /*2424x - 15 = 120x - 3624x - 120x = -36 + 15-96x = -21 /:(-96)x = 7/32c)x-1/2=4,6+3,1/2xx - 0,5 = 4,6 + 3,5x x - 3,5x = 4,6 + 0,5-2,5x = 5,1 / :(-2,5)x = -2,04
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a)
1/4x-(4+1/2x)=-2
1/4x - 4 - 1/2x = -2 /*4
x - 16 - 2x = -8
x - 2x = -8 + 16
-x = 8 /:(-1)
x = -8
b)
x-5/8=5x-18/12 /*24
24x - 15 = 120x - 36
24x - 120x = -36 + 15
-96x = -21 /:(-96)
x = 7/32
c)
x-1/2=4,6+3,1/2x
x - 0,5 = 4,6 + 3,5x
x - 3,5x = 4,6 + 0,5
-2,5x = 5,1 / :(-2,5)
x = -2,04