Rozwiąż równania. a) 3x + 8 = 25 b) 5 + 3 = 128 c) 7x = x +96 Proszę o jak najszybszą odpowiedź! Z góry dziękuję. :-)
a) 3x+8=25
3x= 17
x=5 2/3
b) 5z+3=128
5z= 125
z= 25
c) 7x= x+96
6x=96
x=16
a)
3x + 8 = 25
3x = 25 - 8
3x = 17 /:3
x = 17/3 = 5 2/3
b)
5x + 3 = 128
5x = 128 - 3
5x = 125 /:5
x = 25
c)
7x = x +96
7x - x = 96
6x = 96 /:6
x = 16
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a) 3x+8=25
3x= 17
x=5 2/3
b) 5z+3=128
5z= 125
z= 25
c) 7x= x+96
6x=96
x=16
a)
3x + 8 = 25
3x = 25 - 8
3x = 17 /:3
x = 17/3 = 5 2/3
b)
5x + 3 = 128
5x = 128 - 3
5x = 125 /:5
x = 25
c)
7x = x +96
7x - x = 96
6x = 96 /:6
x = 16