Question

resolver las siguientes ecuaciones

2x + 7 = -3

5x + -7 = x - -9

-9 + 6x =15 + 2x

porfavor lo necesito para hoy o mañana

Answer 1

rpta 1: 2 x + 7 = -3

2 x = - 3 - 7

2 x = - 10

x = - 5

rpta 2: 5 x - 7 = x - (-9)

5 x - 7 = x + 9

5 x - 7 - x = 9

5 x - x = 9 + 7

4 x = 9 + 7

4 x = 16

x = 4

rpta 3: - 9 + 6 x = 15 + 2 x

- 9 + 6 x - 2 x = 15

6 x - 2 x = 15 + 9

4 x = 15 + 9

4 x = 24

x = 6