Question

Me ayudan con estas ecuaciones?

5x + 7 = 2x + 25


x - 3 + 6x = 3x + 17


2 (x + 3) + 1 = 15


x + 9 + 3 (x - 2) = x + 12

Answer 1

a) 5x + 7 = 2x + 25

5x - 2x = 25 - 7

3x = 18

x = 18/3

x = 6

b) x -3 +6x = 3x +17

x +6x -3x = 17+3

4x = 20

x = 20/4

x = 5

c) 2 ( x +3 ) +1 = 15

2x +6 +1 = 15

2x = 15 -6 -1

2x =8

x = 8/2

x = 4

d) x +9 +3 ( x - 2 ) = x +12

x +9 +3x -6 = x +12

x +3x -x = 12 -9 +6

3x = 9

x = 9/3

x= 3

espero te sirva !