Odpowiedź:
a.
3x-7 = -x-(16-2x)
3x-7 = -x-16+2x
3x-x = -16+7
2x = -9 /:2
x = - 4,5
b.
x-4x+3 =6(3-x)
-3x +3 = 18 - 6x
-3x + 6x = 18 -3
3x = 15 /:3
x =5
c.
2x+15 =16(1-0,125x)
2x+15 =16(1- 1/8x)
2x+15 = 16 -2x
2x+2x = 16-15
4x = 1 /:4
x = 1/4 =0,25
d.
x/6 - x/4 = x/2 + 7 /×12
2x - 3x = 6x +84
-x - 6x = 84
-7x = 84 /:(-7)
x = -12
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Odpowiedź:
a.
3x-7 = -x-(16-2x)
3x-7 = -x-16+2x
3x-x = -16+7
2x = -9 /:2
x = - 4,5
b.
x-4x+3 =6(3-x)
-3x +3 = 18 - 6x
-3x + 6x = 18 -3
3x = 15 /:3
x =5
c.
2x+15 =16(1-0,125x)
2x+15 =16(1- 1/8x)
2x+15 = 16 -2x
2x+2x = 16-15
4x = 1 /:4
x = 1/4 =0,25
d.
x/6 - x/4 = x/2 + 7 /×12
2x - 3x = 6x +84
-x - 6x = 84
-7x = 84 /:(-7)
x = -12
Szczegółowe wyjaśnienie: