1) 7x=12 /:7
x = 12/7 = 1 5/12
2) 2t+4=t-3
2t - t = -3 - 4
t = -7
3) 0.3x = 2.1x - 9
0.3x - 2.1x = -9
- 1.8x = -9 /: (-1.8)
x = 5
4) -2 (4x - 2) = x
-8x + 4 = x
-9x = -4 /: (-9)
x = 4/9
5) x + 2 + 3(x-1) = 63
x + 2 + 3x - 3 = 63
4x = 64 /:4
x = 16
6) (x+4)(x-3) = x^2 - 4
x^2 - 3x + 4x - 12 = x^2 - 4
-3x + 4x - 12 = -4
x = 8
Odpowiedź:
Szczegółowe wyjaśnienie:
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1) 7x=12 /:7
x = 12/7 = 1 5/12
2) 2t+4=t-3
2t - t = -3 - 4
t = -7
3) 0.3x = 2.1x - 9
0.3x - 2.1x = -9
- 1.8x = -9 /: (-1.8)
x = 5
4) -2 (4x - 2) = x
-8x + 4 = x
-9x = -4 /: (-9)
x = 4/9
5) x + 2 + 3(x-1) = 63
x + 2 + 3x - 3 = 63
4x = 64 /:4
x = 16
6) (x+4)(x-3) = x^2 - 4
x^2 - 3x + 4x - 12 = x^2 - 4
-3x + 4x - 12 = -4
x = 8
Odpowiedź:
1) 7x=12 /:7
x = 12/7 = 1 5/12
2) 2t+4=t-3
2t - t = -3 - 4
t = -7
3) 0.3x = 2.1x - 9
0.3x - 2.1x = -9
- 1.8x = -9 /: (-1.8)
x = 5
4) -2 (4x - 2) = x
-8x + 4 = x
-9x = -4 /: (-9)
x = 4/9
5) x + 2 + 3(x-1) = 63
x + 2 + 3x - 3 = 63
4x = 64 /:4
x = 16
6) (x+4)(x-3) = x^2 - 4
x^2 - 3x + 4x - 12 = x^2 - 4
-3x + 4x - 12 = -4
x = 8
Szczegółowe wyjaśnienie: