Question

verificación de:
4 – 6x = 3x – 5
7x – 5 = 4 + 6x
3.(3x – 5) + 3.(2x – 6) = 42
2.(-3x + 3) – 3.(x + 5) = x + 11
porfaa contesten rapido es para mañana

Answer 1

respuesta:

1) 4 – 6x = 3x – 5

4 - 9x = -5

-9x = -5 -4

-9x = -9

x = 1

2) 7x – 5 = 4 + 6x

x + 4 + 6x = 7x - 5

7x + 4 = 7x - 5

7x + 4 = 7x - 5

(restamos 7x de 7x)

0 + 4 = - 5

4 = - 5

dado que 4 es distinto de - 5

no tiene solución

3) 3.(3x – 5) + 3.(2x – 6) = 42

9x - 15 + 6x - 18 = 42

9x + 6x = 42 + 15 + 18

15x = 75

x = 5

4) 2.(-3x + 3) – 3.(x + 5) = x + 11

-6x + 6 - 3x + 15 = x + 11

-9× - 9 = x + 11

-10× - 9 = 11

-10x = 20

x = - 2

Answer 2

$4 - 6x = 3x - 5 \\ 4 + 5 = 3x + 6x \\ 9 = 9x \\ 1 = x \\ \\ 7x - 5 = 4 + 6x \\ 7x - 6x = 4 + 5 \\ x = 9 \\ \\</p><p>$

$3(3x - 5) + 3(2x - 6) = 42 \\ 9x - 15 + 6 x - 18 = 42 \\ 15x - 33 = 42 \\ 15x = 42 + 33 \\ 15x = 75 \\ x = 5 \\ \\ 2( - 3x + 3) - 3(x + 5) = x + 11 \\ - 6x + 6 - 3x - 15 = x + 11 \\ - 9x - 9 = x + 11 \\ - 9 - 11 = -9x + x \\ - 20 = 20x \\ - 1 = x$