Odpowiedź:
Szczegółowe wyjaśnienie:
a) 1/2x + 3 =7
1/2x = 7-3
1/2x = 4
x = 8
b) 2/3 (x-1) = 2/3
2/3x -2/3 = 2/3
2/3x = 2/3+2/3
2/3x= 4/3 |*3
2x = 4
x=2
c) x/4 -3/8 =1/2
x/4 = 1/2+3/8
x/4 = 4/8 + 3/8
x/4 = 7/8 |*4
x= 28/8
x= 3 4/8
a. 1/2x + 3 = 7
1/2x = 7 - 3
1/2x = 4 | *2
b. 2/3 ( x - 1 ) = 2/3
2/3 x - 2/3 = 2/3
2/3x = 2/3 +2/3
2/3x = 1 1/3 | *3
2x = 4 | :2
x = 2
c. x/4 - 3/8 = 1/2 |*8
2x - 3 = 4
2x = 4 + 3
2x = 7 | :2
x = 3,5
Mam nadzieje, ze pomoglam :)))
