MatemáticasBásico1 respuestas

X + 8 = 1511 + x = 32x + 6 = 2x2x + 1 = 1320x + 5x = 12255 - x = 7 - 2x?

X + 8 = 15 11 + x = 32 x + 6 = 2x 2x + 1 = 13 20x + 5x = 1225 5 - x = 7 - 2x.

En resumen

X + 8 = 15 x = 15 - 8 - - - > x = 7 11 + x = 32 x = 32 - 11 - - - - > x = 21 x + 6 = 2x 6 = 2x - x - - - - > x = 6 2x + 1 = 13 2x = 13 - 1 2x = 12 - - - - > x = 6 20x + 5x = 1225 25x = 1225 x = 49 5 - x = 7 - 2x - x + 2x = 7 - 5 x = 2 .

Mejor respuesta

Melanieb
2

X + 8 = 15

x = 15 - 8 - - - > x = 7

11 + x = 32

x = 32 - 11 - - - - > x = 21

x + 6 = 2x

6 = 2x - x - - - - > x = 6

2x + 1 = 13

2x = 13 - 1

2x = 12 - - - - > x = 6

20x + 5x = 1225

25x = 1225

x = 49

5 - x = 7 - 2x - x + 2x = 7 - 5

x = 2 .