Question

numero 13:19+2x-13=10-20 numero 14: 10x-12+10=18-20

Answer 1

13) 19 + 2x - 13 = 10 - 20
2x = - 19 + 13 + 10 - 20 =>
2x = - 39 + 23 =>
2x = - 16 => x = -16/2 =>
x = -8

14) 10x - 12 + 10 = 18 - 20
10x = 12 - 10 + 18 - 20 =>
10x = 30 - 30 =>
10x = 0 => x = 0

Answer 2

13) 19 + 2x - 13 = 10 - 20

2x = - 19 + 13 + 10 - 20 =>

2x = - 39 + 23 =>

2x = - 16 => x = -16/2 =>

x = -8

14) 10x - 12 + 10 = 18 - 20

10x = 12 - 10 + 18 - 20 =>

10x = 30 - 30 =>

10x = 0 => x = 0

espero ter ajudado T^T