Odpowiedź:
Szczegółowe wyjaśnienie:
s) (2x+7)/9 -4= (x-7)/12 | *368x+28-148=3x-215x=99x=19,8
r) (4x-1)/10 - (5x+2)/4 = -3 | *208x-2 - 25x+10 = -60-17x = -68x=4
o) (3n-1)/9 - (n-2)/8 = 1/2 | *7224n-8 - 9n-18 = 3615n-26 = 3615n = 62n = 4 i 2/15
n) -(2x+5)/6 + ((5(x-2))/4 - ((2(2x+1))/3 = 1 | *12-4x-10 + 15x-30 - 16x-8=12-5x = 60x = -12
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Odpowiedź:
Szczegółowe wyjaśnienie:
s) (2x+7)/9 -4= (x-7)/12 | *36
8x+28-148=3x-21
5x=99
x=19,8
r) (4x-1)/10 - (5x+2)/4 = -3 | *20
8x-2 - 25x+10 = -60
-17x = -68
x=4
o) (3n-1)/9 - (n-2)/8 = 1/2 | *72
24n-8 - 9n-18 = 36
15n-26 = 36
15n = 62
n = 4 i 2/15
n) -(2x+5)/6 + ((5(x-2))/4 - ((2(2x+1))/3 = 1 | *12
-4x-10 + 15x-30 - 16x-8=12
-5x = 60
x = -12