Odpowiedź:
A 4x+5x=15+3
9x=18:9
x=2
B 5x-3x=13-7
2x=6:2
x=3
C 7x-6x=5+2
x=7
a) 4 * x - 3 + 5 * x = 15
4x + 5x = 15 + 3
9x = 18 / :9
x = 2
b)5 * x + 7 - 3 * x = 13
5x - 3x = 13 - 7
2x = 6 /:2
x = 3
c) 7x - 2 - 6x = 5
7x - 6x = 5 + 2
1x = 7 / :1
x = 7
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Odpowiedź:
A 4x+5x=15+3
9x=18:9
x=2
B 5x-3x=13-7
2x=6:2
x=3
C 7x-6x=5+2
x=7
a) 4 * x - 3 + 5 * x = 15
4x + 5x = 15 + 3
9x = 18 / :9
x = 2
b)5 * x + 7 - 3 * x = 13
5x - 3x = 13 - 7
2x = 6 /:2
x = 3
c) 7x - 2 - 6x = 5
7x - 6x = 5 + 2
1x = 7 / :1
x = 7