Ecuaciones 2 5to grado.
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Respuestas a la pregunta
Respuesta:
1. 17x - 16x = 12
x = 12
2. 7x + 8 +9x =56
7x + 9x = 56 - 8
16x = 48
x = 48/16
x = 3
3. 9x - 20 = 5x + 4
9x - 5x = 4 + 20
4x = 24
x = 24/4
x = 6
4. 6x + 10 = 2x + 18
6x - 2x = 18 - 10
4x = 8
x = 8/4
x = 2
5. 8x - 2 = 30 - 8x
8x + 8x = 30 + 2
16x = 32
x = 32/16
x = 2
6. 4x - 10 = 3x + 1 + 15 - 16
4x - 3x = 1 + 15 - 16 + 10
x = 10
7. 20x - 11 - 13x = 6x + 10
20x - 13x - 6x = 10 + 11
20x - 19x = 21
x = 21
8. 3(3x + 1) = 7x + 9
9x + 3 = 7x + 9
9x - 7x = 9 - 3
2x = 6
x = 6/2
x = 3
9. 4(2x - 3) = 5x
8x - 12 = 5x
8x - 5x = 12
3x = 12
x = 12/3
x = 4
10. 5(x + 7) = 45
5x + 35 = 45
5x = 45 - 35
5x = 10
x = 10/5
x = 2