Odpowiedź:
1. 2x + 1 + 5
2x = - 6 /:2
x = - 3
2. 2x + 6 + 12
2x = - 18 /:2
x = - 9
3. 4 - 2x + 10
2x = - 14 /:2
x = - 7
4. 20 - 3x = 2x + 5
-5x = - 15/:(-5)
x = 3
5. 2x + 4 = 4 - 3x
5x = 0 /:5
x = 0
6. 2(x + 1) = 5
2x + 2 = 5
2x = 3/:2
x = 1,5
7. 3(x - 2) - 7 = 8
3x - 6 - 7 = 8
3x = 21/: 3
x = 7
8. 2x - (3x + 1) = 6
2x - 3x - 1 = 6
-1x = 7/: (-1)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Odpowiedź:
1. 2x + 1 + 5
2x = - 6 /:2
x = - 3
2. 2x + 6 + 12
2x = - 18 /:2
x = - 9
3. 4 - 2x + 10
2x = - 14 /:2
x = - 7
4. 20 - 3x = 2x + 5
-5x = - 15/:(-5)
x = 3
5. 2x + 4 = 4 - 3x
5x = 0 /:5
x = 0
6. 2(x + 1) = 5
2x + 2 = 5
2x = 3/:2
x = 1,5
7. 3(x - 2) - 7 = 8
3x - 6 - 7 = 8
3x = 21/: 3
x = 7
8. 2x - (3x + 1) = 6
2x - 3x - 1 = 6
-1x = 7/: (-1)
x = - 7