a)
[tex]5x+4 = 10\\ 5x=6|:5\\ x=\frac{6}{5} =1\frac{1}{5} [/tex]
b)
[tex]3x-5=9\\ 3x=14|:3\\ x=\frac{14}{3} =4\frac{2}{3} [/tex]
c)
[tex]2x+3=7\\ 2x=4|:2\\ x=2[/tex]
d)
[tex]4x-3=13\\ 4x=16|:4\\ x=4[/tex]
Myślę że pomogłem ;)
Odpowiedź:
5x + 4 = 10
5x = 10 - 4
5x = 6 |:5
x = 6/5 = 1 i 1/5
3x - 5 = 9
3x = 9 + 5
3x = 14 |:3
x = 14/3 = 4 i 2/3
2x + 3 = 7
2x = 7 - 3
2x = 4 |:(2)
x = 2
4x - 3 = 13
4x = 13 + 3
4x = 16 |:(4)
x = 4